Save Your Vision Month –

Save Your Vision Month is here.

We at DEF remind you to prioritize your eyes in 2024

In honor of Save Your Vision Month, here are some everyday things you can control to help “Save Your Vision”.

  • Enjoy a cup of tea –Green tea contains antioxidants, like vitamins C and E, lutein, and zeaxanthin that help protect against AMD and cataracts. It is it hydrating, helping you produce tears.
  • Take time to blink – On an average you blink about 15 – 20 times a minute. However, that rate drops by half when viewing text on a screen. Try using the 20/20/20 rule when staring at a screen: Every 20 minutes, look 20 feet away for 20 seconds so you can blink naturally and give your eyes time to relax.
  • Wear sunglasses and a hat – Exposure to ultraviolet (UV) rays can deteriorate vision over time and can lead to cataracts and possibly age-related macular degeneration (AMD). The American Optometric Association recommends sunglasses that block at least 99 percent of UVA and UVB radiation and that screen out 75 – 90% of visible light. And if you plan to spend a lot of time outdoors, it’s a good idea to get sunglasses with lenses that are polarized, which means that they’ve been treated to reduce glare. We suggest wearing a large brimmed hat to further protect your eyes.
  • Increase the seafood in your diet – Omega-3 fatty acids have been shown to bolster heart and brain health, as well as decrease your risk of eye disease. Studies show consuming omega-3 fatty acids, whether in foods you eat or in a supplement. It may help reduce your risk of developing macular degeneration. Research also shows not only can omega-3 fatty acids help reduce your risk of developing dry eyes, but it may also help treat bothersome symptoms as well.
  • Eat a rainbow – Eating a full rainbow of fruits and vegetables regularly helps give your body the nutrients it needs. In addition to fiber, vitamins and minerals, naturally colored foods contain what are known as phytochemicals, which are disease-fighting substances that also give fruits and vegetable their array of colors. Star nutrients are lutein and zeaxanthin—pigments found in such foods as dark, leafy greens, broccoli, zucchini, peas, and Brussels sprouts.  Also important are antioxidants found in red foods such as strawberries, cherries, red peppers and raspberries, orange foods have beta-carotene and include carrots, pumpkins, sweet potatoes and yams.
  • Use digital screens at a safe distance – The brightness and glare from computers, tablets, smartphones and televisions can lead to eyestrain after prolonged use. Recent studies have also shown ill-effects from the UV rays from these devices. Symptoms can include headaches, blurred vision, dry or red eyes and difficulty refocusing. Experts recommend keeping the computer screen at least an arm’s length away and that you hold a handheld device at least 16 inches from your eyes.
  • Contact lens solutions serve a purpose –The most harmful but common problem is moistening contacts with saliva instead of saline solution. Proper contact lens care is important for keeping and free from infection.
  • Make-up makeover – Replace tubes of mascara after three months, as it is a breeding ground for bacteria. Sharpen liner pencils regularly and while it is okay to line the base of your lashes, using the liner inside the lash line can block oil glands. Replace eye shadows yearly and don’t share your eye cosmetics.
  • Use protective goggles – According to studies nearly half of eye injuries happen at home. These injuries occur when protective eyewear is not used or when the incorrect protective eyewear is used and an exposure occurs from around or under the protective eye equipment.  Sports activities are another cause of eye injuries, from contact sports to sports that use balls that could catch you unaware.  When snowboarding or skiing remember to protect your eyes from the sun and wind with tinted goggles that have UV protection.
  • Have a yearly eye exam – Even if you don’t wear corrective lenses, adults should get a comprehensive eye exam (which includes dilating your pupils with drops) by age 40. After that a yearly eye exam is recommended to keep your eyes healthy and catch any changes in your eyes that may be indicators of eye disease. If you have a family history of glaucoma or age-related macular degeneration, or you have diabetes, you are at a higher risk for vision-related issues and your doctor may elect to see you more often. If you have symptoms such as persistent pain inside or behind your eyes, redness, or gradual loss of vision, make an appointment with your doctor immediately.

September is Healthy Aging Month

Healthy Aging Month is an annual health observance designed to focus national attention on the positive aspects of growing older.  Aging is a process that brings many changes. Vision loss and blindness, however, do not have to be one of them. There are several simple steps you can take to help keep your eyes healthy for the rest of your life.

Eye diseases often have no early symptoms, but can be detected during a comprehensive dilated eye exam.  A comprehensive dilated eye exam is different from the basic eye exam or screening you have for glasses or contacts. By dilating the pupils and examining the back of the eyes, your eye care professional can detect eye diseases in their early stages, before vision loss occurs. By performing a comprehensive eye exam, your eye care professional can check for early signs of –

Here are some other tips to maintain healthy vision now and as you age:

  • Eat a healthy, balanced diet. Fruits and vegetables can help keep your eyes healthy. Visit our website for healthy eye recipes, click here Eye Cook.

 

 

  • Maintain a healthy weight. Being overweight increases your risk for diabetes. By exercising regularly, you can help keep your body healthy and prevent vision loss. 

 

 

  • Don’t smoke. Smoking increases your risk for age-related macular degeneration, cataract, and other eye diseases and conditions that can damage the optic nerve.

 

 

 

  • Wear protective eyewear when outdoors. Protecting your eyes from the sun’s ultraviolet rays when you are outdoors is vital for your eye health.  Wearing sunglasses that block 99 to 100 percent of both UV-A and UV-B radiation.

 

  • Know your family history.  Talk to your family members about their eye health history. It’s important to know if anyone has been diagnosed with a disease or condition since many are hereditary, such as glaucoma, macular degeneration, and diabetes . This will help determine if you are at higher risk for developing an eye disease or condition.

 

  • Consider a multivitamin. Vitamins C, E and the mineral zinc have been shown to promote eye health.  Vitamins with Lutein and Zeaxanthin have been known to help patients with moderate to severe age-related macular degeneration.

 

  • Give your eyes a rest.  If you spend a lot of time at the computer or focusing at any one distance, you sometimes forget to blink, resulting in dryness and eye fatigue.  Every 20 minutes, look away about 20 feet in front of you for 20 seconds. This can help reduce eyestrain. Consider using a lubricant eye drop during long periods of intense eye use and rest your eyes for 5 minutes.

You can’t stop time, but you can take care of your eyes so that they remain healthy as you age. Having a healthy vision can be possible at any age! Even if you are not experiencing vision problems, visiting an eye care professional regularly for a comprehensive dilated eye exam is the most important thing you can do to reduce your risk of vision loss as you age.

Download “Everyone’s vision can change with age”
A handout with explanation on how vision can change with age.

January is Glaucoma Awareness Month

January is Glaucoma Awareness Month and the perfect time to raise awareness about this disease. Early on there are no symptoms.  In fact, many people with glaucoma don’t even know they have it. Learn about glaucoma and the steps you can take to reduce your risk of vision loss.

There are several types of glaucoma, although the most common type of glaucoma is age-related Primary Open-Angle Glaucoma.  It affects people starting at age 40, but can develop anytime later in life.

So, the way to detect if you have it is to get regular thorough eye examinations every two years after age 40.

ARE YOU AT RISK?

Anyone can get glaucoma, but certain groups are at higher risk. These groups include African Americans and Hispanics over the age of 40, and all people over the age of 60. Since it is hereditary, people with a family history of glaucoma and people who have diabetes are at higher risk.

4 GLAUCOMA GUIDELINES TO REMEMBER

1. Glaucoma can affect people of all ages – Although it is generally associated with seniors, glaucoma can strike anyone.

2. Demographics do play a role – Glaucoma is a leading cause of blindness among African Americans; it’s also highly prevalent in Hispanics over the age 65.

3. Is glaucoma hereditary? – The risk of developing primary open–angle glaucoma is up to nine times more likely if parents or siblings have the disease.

4. Hope for future glaucoma patients – Although there is no cure for glaucoma, early diagnosis and treatment can help control the disease and slow or stop the process of vision loss and blindness.

There are many steps you can take to help protect your eyes and lower your risk of vision loss from glaucoma. 

  • If you are in a high-risk group, get a comprehensive dilated eye exam every two years to catch glaucoma early and start treatment. Prescription eye drops, and if that fails, surgery can stop glaucoma from progressing.
  • Even if you are not in a high-risk group, getting a comprehensive dilated eye exams can help catch glaucoma and other eye diseases early.
  • Open-angle glaucoma does not have symptoms and is hereditary. So talk to your family members about their vision health to help protect your eyes and theirs.
  • Maintaining a healthy weight, controlling your blood pressure, being physically active and avoiding smoking will help you avoid vision loss from glaucoma.
  • Stay aware of the risks and symptoms and remember an annual comprehensive eye exam is key for early detection of glaucoma and other eye diseases.

Click here to get more information on Glaucoma.

Discovery Eye Foundation research is undertaking a new approach to save vision for glaucoma patients.

Read our 2022 Thanksgiving Newsletter to learn more.

CLICK LINK BELOW IF YOU WOULD LIKE TO HELP SUPPORT DEF’S GLAUCOMA RESEARCH 

Support Discovery Eye Foundation

 

A Thanksgiving Spread that Promotes Eye Health

Thanksgiving is almost here; a meal that nourishes the family bonds and traditions.  It’s the one time of the year where you can guarantee your eyes will be bigger than your stomach. This meal also has another added bonus — almost every item on the Thanksgiving table is healthy for your eyesight!

Here are several of the most popular Thanksgiving dishes and their corresponding benefits to your eye health:

Turkey –

No Thanksgiving is complete without a turkey, roasted golden brown and stuffed with fresh vegetables and herbs. Turkey is loaded with zinc and B-vitamin niacin, which helps prevent the formation of cataracts. Cataracts are the leading cause of vision loss in the United States, so gobble up!  You are “preventing” cataracts with every bite.

 

Spinach, Green Bean Casserole, Asparagus and Brussel Sprouts –

These foods and other leafy greens are loaded with lutein and zeaxanthin, two nutrients that protect the retina, which may also help reduce the risk of cataracts and macular degeneration.  Healthy Green Bean Casserole Recipe

 

Sweet Potatoes –

Sweet potatoes are full of Beta-carotene, which is a carotenoid and antioxidant that promotes night vision and overall good eyesight. Sweet potatoes are also loaded with vitamins C and E. Diets that are rich in these vitamins can help prevent or delay the development of cataracts and macular degeneration. Mashed Sweet Potatoes Recipe

 

Cranberry Sauce –

Cranberries contain bioflavonoids, a large class of antioxidants. Bioflavonoids are found in the pulp, skin and rinds of foods that contain vitamin C. Both flavonoids and vitamin C help protect the eyes from free radical damage caused by pollution and the body’s normal metabolic processes.

 

Pumpkin Pie –

Pumpkin is one of the best sources of vitamin A, so pumpkin pie is an eye-healthy dessert. In fact, one cup of cooked, mashed pumpkin contains more than 200 percent of the recommended daily intake of Vitamin A. Vitamin A provides nourishment and protection to the eye’s lens, cornea and macula (part of the retina), so it improves night vision. 

 

A diet that’s full of the right nutrients is a great start to keeping your eyes healthy, but don’t forget that regular eye exams are equally important! We hope you enjoy a happy and delicious Thanksgiving with family and friends.

*For more eye healthy recipes click here EYE COOK

5 Most Common Eye Problems

Most people have eye problems at one time or another. Some are minor and will go away on their own, or are easy to treat at home. Others need a specialist’s care. Some eye issues come with age while others may be a serious condition.

 

If you’ve never had a problem with your eyes it can be easy to forget how important it is to take care of them. The good news is that it’s never too late to start taking care of your eye health. Regular eye health appointments and eye exams can lead to early diagnosis. This is key to correcting or slowing most eye conditions.  Always see your eye care professional if your vision problem lasts for more than a few days or worsens.

The five most common eye conditions leading to loss of vision or blindness are:

  • Dry Eye
  • Cataracts
  • Diabetic retinopathy
  • Glaucoma
  • Age-related macular degeneration

Dry Eye

Dry eye is a common condition that occurs when your tears aren’t able to provide adequate lubrication for your eyes. Tears can be inadequate for many reasons. For example, dry eyes may occur if you don’t produce enough tears or if you produce poor-quality tears. Dry eyes can also feel very uncomfortable.

Signs and symptoms, which usually affect both eyes, may include:

  • A stinging, burning or scratchy sensation in your eyes
  • Stringy mucus in or around your eyes
  • Sensitivity to light
  • Eye redness
  • A sensation of having something in your eyes
  • Difficulty wearing contact lenses
  • Difficulty with nighttime driving
  • Watery eyes, which is the body’s response to the irritation of dry eyes
  • Blurred vision or eye fatigue

Cataracts

A cataract is a clouding of the lens in the eye that typically will affect your vision. Most cataracts are related to aging. People who have cataracts often have other vision problems in one or both eyes that accompany the cataract, such as nearsightedness (myopia), farsightedness (hyperopia), astigmatism (blurred vision), and/or presbyopia (reading problems).

The lens lies behind the iris and the pupil. It works much like a camera lens. It focuses light onto the retina at the back of the eye, where an image is recorded and sent to the brain. The lens also adjusts the eye’s focus, letting us see things clearly both up close and far away. The lens is made of mostly water and protein. The protein is arranged in a precise way that normally keeps the lens clear and lets light pass through it.

But as we age, some of the protein may clump together and start to cloud the lens. This is a cataract. Over time, the cataract may grow larger or more dense making it harder to see. There are no known medications or diets to prevent age-related cataract so currently the only treatment is cataract surgery. Consult an ophthalmologist for a cataract surgery evaluation.

Diabetic Retinopathy

Diabetic retinopathy is the most common diabetic eye disease and a leading cause of blindness in American adults caused by changes in the blood vessels of the retina.

We know that:

  • Currently more than 4 million Americans aged 40 and older have some form of diabetic retinopathy
  • There is a higher prevalence in African Americans, Hispanics/Latinos, American Indians, and Alaska Natives aged 20 and older
  • Preventive measures help and it is highly treatable.

In some people with diabetic retinopathy, blood vessels may swell and leak fluid or blood inside the eye. In other people, abnormal new blood vessels grow on the surface of the retina. The retina is the light-sensitive tissue at the back of the eye. A healthy retina is necessary for good vision.

Two important tips for diabetic retinopathy prevention: 1) Diabetic retinopathy is worse in patients with poor blood sugar control, so follow your diet and medication prescriptions carefully. 2) Get a dilated eye exam from your ophthalmologist every year for early diagnosis and treatment.

Glaucoma

Glaucoma is a disease that causes damage to the major nerve of the eye called the optic nerve, a part of the central nervous system that carries visual information from the eye to the brain.

The eye experiences a gradual increase of intraocular pressure (IOP) due to an imbalance of the fluid produced in the eye and the amount of fluid drained. Over time, elevated IOP can cause vision loss. The most common form of glaucoma is primary open angle glaucoma which affects about 3 million Americans. However, there are other types including narrow angle, congenital, normal tension, and secondary glaucoma.

At age 50 about 2% of the US population has glaucoma, increasing to 4% by age 70 and 10% for those over age 80. While anyone can develop glaucoma, there are some risk factors that increase the likelihood of having this disease, which include:

  • A family history of glaucoma
  • Mexican American heritage over the age of 60
  • African American heritage over age 40.

Often people with glaucoma are unaware they have the disease because there are no symptoms, so it is recommended that you have a dilated eye exam every two years. With early diagnosis there are treatments that can often protect against irreversible damage to the optic nerve that can lead to serious vision loss. Glaucoma can be treated with eye medications, lasers, and various surgical procedures. However, if glaucoma is not controlled can cause debilitating loss of vision.

Age-Related Macular Degeneration

Age-Related Macular degeneration (AMD) is a progressive eye condition affecting as many as 15 million Americans. The disease attacks the macula of the eye, where our sharpest central vision occurs, affecting reading, driving, identifying faces, watching television, safely navigating stairs and performing other daily tasks. Although it rarely results in complete blindness, it robs the individual of all but the outermost, peripheral vision, leaving only dim images or black holes at the center of vision.

As the disease progresses color vision and central vision sharpness deteriorates. the gradual destruction of light sensitive cells continues until large areas are totally gone. Peripheral vision remains, but the ability to clearly see straight ahead and to see color is lost.

For many people, the first sign of macular degeneration is something they notice themselves. Straight lines like doorways or telephone wires may appear wavy or disconnected. When you look at a person, their face may be blurred while the rest of them is in focus. Lines of print may be blurred in the center or the lines may be crooked. For some people, there is a sudden blurring or loss of sight in the center of vision. For any sudden change in vision, you should contact your ophthalmologist immediately.

AMD can be classified into Early AMD and Late AMD. In Early AMD, a patient may have drusen, which are small protein/lipid deposits underneath the retina, and they can still have good vision. In Late AMD, there are two common forms that occur—wet (neovascular AMD) and dry (atrophic AMD). The wet AMD has abnormal blood vessels beneath the retina that leak blood which can greatly distort the vision and cause a central blind spot.  Approximately 10-15% of patients have the wet form. Fortunately, there are treatments for wet AMD.   To date, the dry, atrophic form of AMD does not have any treatments available. In dry AMD, the retinal pigment epithelial (RPE) cells, which are the posterior-most layer of cells in the retina, undergo extensive degeneration that causes the overlying retina to lose function.  We do not know what causes the RPE cells to become unhealthy and start to die.  Many research laboratories worldwide are studying the causes of dry AMD and how to treat it.

Help keep your eyes healthy for years to come with regular eye exams, and treatment at the first sign of a problem.

 

How to Prevent Eye Strain While Working From Home

Working from home has become the new normal for many Americans during this pandemic.  Most are happy without the commute, although working outside the office and in all sorts of strange places, such as bedrooms, backyards, living rooms, has become common place. We’ve had to learn how to work remotely, which in turn means spending a lot more time using computers and smartphones.

Moving out of properly-lit classrooms and offices – and away from ergonomically correct desks – can have long-term effects on our eyes.  Excessive time at a computer screen under the best conditions can lead to symptoms of eye strain.

Eye Strain Symptoms include:

  • Headaches
  • Blurred vision
  • Uncomfortable dry eyes
  • Neck and shoulder pain

To help avoid eye strain, here are few tips for working from home:

  • Record time spent on screens – Most adults age 18 and older spend at least 13 hours each day using digital devices. Extended screen time can cause discomfort and vision difficulties. When working from home, you may lose track of how much time you’re on your computer or smartphone.  So keep track of the hours you use devices. That way, you’ll be aware of the demand you’re placing on your eyes.
  • Rest and blink your eyes – Researchers found that over 30% of people using digital devices rarely take time to rest their eyes. Just over 10% say they never take a break, even when working from home. The eye muscles get overworked and don’t get a chance to relax and recover. Experts suggest the 20-20-20 rule; every 20 minutes, focus your eyes and attention on something 20 feet away for 20 seconds.  You can also get up and walk around for a few minutes.

 

  • Reduce exposure to blue light – In the spectrum of light, blue is more high energy and close to ultraviolet light. So, if you use screens throughout the day, ask your eye doctor about the value of computer glasses that block blue light. Reducing exposure to blue light may help lessen vision problems.  At home, using digital devices until bedtime can overstimulate your brain and make it more difficult to fall asleep. Eye doctors recommend no screen time at least one to two hours before going to sleep.

  

  • Sit up straight – Proper posture is important. Your back should be straight and your feet on the floor while you work. Elevate your wrists slightly instead of resting them on the keyboard.

 

 

  • Proper lighting – A setting that’s too bright (sunny backyard) or too dim (cavernous basement) can cause eye strain and headaches. Your screen should be bright enough that you don’t need to squint. A screen shield can help reduce glare.

 

  • Set up monitor properly – Make sure your computer screen is about 25 inches, or an arm’s length, away from your face. The center of the screen should be about 10-15 degrees below eye level.  Cut glare by using a matte screen filter. You can find them for all types of computers, phones, and tablets.  Increase font size or set the magnification of the documents you are reading to a comfortable size.

 

  • Consider computer glasses –For the greatest comfort at your computer, you might benefit from having your eye doctor modify your eyeglasses prescription to create customized computer glasses. This is especially true if you normally wear distance contact lenses, which may also become dry and uncomfortable during extended screen time.  Computer glasses also are a good choice if you wear bifocals or progressive lenses, because these lenses generally are not optimal for the distance to your computer screen.
  • Create Technology-Free Zones – These tips can help reduce eye strain when you’re forced to look at screens all day, creating technology-free zones in certain areas of your home, like the bedroom or bathroom. If you spend the entire day working on the computer, getting in bed and scrolling through social media until you fall asleep won’t do your eyes any favors.

Once you’re done for the day, truly unplug. Read a book or spend some quality time with family members without your phone.

 

  • Get an Eye Exam – If you have tried all these tips and eye strain is still an issue, it might be time to see an eye care professional to schedule an eye exam.  The exam may even detect underlying issues before they becomes worse.

 

 

 

 

 

What To Expect On Your Next Visit To Your Eye Care Practitioner During COVID-19 Pandemic

Taking care of your health is critical and you may have concerns related to eye health as a result of the COVID-19 pandemic. The offices of Ophthalmologists and Optometrists are resuming the delivery of comprehensive eye and vision care and implementing new protocols to provide care in a safe and healthy environment.

While changes vary from state-to-state as well as individual practice locations, patients should expect that their eye doctors, like all medical professionals, are adhering to federal, state and local health directives regarding infection prevention measures and implementing appropriate safety procedures to reduce the risk of COVID-19 transmission within the office. These not only include strict protocols for cleaning and sterilization, but measures to effectively manage patient flow and encourage physical distancing. Patients should expect screenings for symptoms of COVID-19 and taking patients’ temperature upon their arrival at the facility, limiting the number of guests allowed in waiting rooms and requiring everyone to wear a facemask and/or gloves before entering the office.

Prior to the appointment, you should be asked a series of questions such as whether you have been diagnosed with COVID-19, whether you have been exposed to anyone who has an active COVID infection, and whether you have any of the typical symptoms of a COVID-19 infection including fever, cough, shortness of breath, or some impairment of your sense of taste or smell. You may also be asked about recent travel history. If there is a concern that you may have COVID-19 infection, then the appointment may be rescheduled to a later date.

Once you get to the office, you will be interviewed again to see if you have any symptoms suggestive of COVID-19 infection. You may be asked to have your temperature taken with a non-contact thermometer and to wash your hands or scrub your hands with hand sanitizer before entering the office. You may be asked not to bring any family members or assistants with you.

Every patient (and anyone accompanying the patient) is required to wear a mask, and the mask must be worn properly, covering both the nose and mouth. The mask must be worn through the entire visit, and conversations with the doctor or staff will be limited. The tests that are used to monitor glaucoma may be performed with modified protocols to minimize the time you spend at the office.

How to Prepare for Your Eye Doctor Visit

  • Don’t go if you’re feeling sick. If you wake up with a cough or a sore throat, it’s probably best to reschedule your appointment and call your primary physician. Your routine eye exam can wait. Don’t be surprised if someone takes your temperature upon arrival to ensure safety for everyone.
  •  Fill out forms in advance. If possible, fill out your intake forms online before your appointment. This will limit your face-to-face contact and your overall time within the office. Any additional information that’s requested by your doctor can also be done over the phone.
  • Follow social distancing guidelines. There may be new procedures in place to help with social distancing, from markers on the ground indicating where to stand, to a limited number of people allowed in certain areas. Depending upon the office location, you may need to call from your car to check in. Every office is different, so be sure to check with your doctor’s office about their requirements.
  • Go alone to your appointment. Most offices are only allowing the patient to enter the office, with the exception of those who require a caregiver or a guardian to attend the appointment with them. This limits the amount of people going in and out of the office, and helps maintain a more sterile, clean environment.
  • Wear a mask to your appointment. Depending on your state, a mask may either be mandated or highly recommended when you are in public places. The Centers for Disease Control and Prevention highly advises people to wear a mask covering their nose and their mouth in order to help stop the spread of COVID-19.

As your eye care doctors begin reopening and operations proceed under a “new normal,” your ophthalmologist and/or optometrist are working to ensure the continued safe delivery of essential eye care during the COVID-19 pandemic.

To know exactly what to expect during your appointment, call your doctor’s office to find out how to best prepare for your visit.

Beauty is in the Eyes of the Beholder

I love the idea that beauty is in the eyes of the beholder. It reminds us that individuals can make choices about what they perceive to be true beauty.

Let’s consider art… one person’s beautiful can be another person’s junk. If beauty is in the eyes of the beholder, the question is – are we taking the time to appreciate all that surrounds us? From Mother Nature’s unlimited panoplies of possibilities to the innocent smile of a child, beauty is the catalyst that makes being alive the greatest of all human adventures.

I am sure you’ve heard the phrase “stop and smell the roses,” so why not take the time to stop and observe the beauty your eyes can behold.

The Discovery Eye Foundation is working every day to preserve your vision and give all of us the chance to see what’s truly beautiful and treasure it.  All you have to do is open your eyes and take a look.

Louis Armstrong said it well:

I see trees of green and red roses too.
I see them bloom for me and you.
And I think to myself,
what a wonderful world.

You’re right Louis… it is a wonderful world if we all just keep appreciating the beauty that’s out there for all of us.

 
Donate today to help support the Discovery Eye Foundation! 

DonateNow

Tom Sullivan
DEF’s Ambassador of Vision
sullivanvision.com

 

OUR EYES WORK LIKE CAMERA’S!

The inner workings of the human eye are complex, but at the same time, fascinating. Have you wondered how exactly they do work or what are the major parts of the eyeball involved in creating vision? Let’s find out.

These tiny cameras spend every day processing millions of pieces of information at lightning fast speeds, and turn them into the simple images we see almost instantly.

In reality, this process is anything but simple. The eye has several distinct parts, each of which has specific responsibilities that work together like a machine.

The eyeball is just like a camera. In fact, human eyes are part of a classification known as “camera-type eyes.” And just like a camera, it can’t function without the presence of light.  As light hits the eyes, it’s focused by the eye in a way similar to a camera lens. This process allows the images we see to appear clear and sharp rather than blurry.

There are specific parts of the eye that make this focusing process possible. Each beam of light that hits the eye goes through a series of steps:

Step 1: Light passes through a thin layer of moisture

Step 2: Light hits the cornea.  The cornea is transparent, and is the first layer to begin focusing light within the eye. The cornea is connected to the sclera, which is a tough fiber on the outside of the eye that acts as protection.

Step 3: Behind the cornea is another liquid layer known as the aqueous humor, and its job is to maintain pressure levels in the front of the eye as light is passing through.

Step 4: Once light has passed through the aqueous humor, it has finally reached the pupil. The pupil is the round entryway of the colored iris.

Step 5: Once the pupil determines how much light it will let inside your eye, the job passes to the lens. The lens factors in the amount of light the pupil lets in, and figures out how far away you are from the object that the light is reflecting off of, or the object you’re trying to see. From there, the lens focuses your image into an accurate view of what you’re looking at. Part of this process is controlled by muscles in the lens called ciliary muscles, which expand and contract to pull on the lens and allow it to focus properly.

Step 6: As light reaches the center of the eye passes through another layer of moisture, called the vitreous, or vitreous humor. Then, it reaches the final stop in the process: The Retina.

The retina is the back of the eye. If the lens in your eye is most like a camera, the retina is most like its film – this is where the final product is projected. The retina has several parts:

  • Macula: The center of the retina. The center point of the macula is called the fovea, and it has the most photoreceptors and nerve endings of any part of the eye.
  • Photoreceptors: Split into two designations – rods and cones.
    • Cones are in the macula. When there is bright light, cones provide clear, sharp central vision and detect colors and fine details.
    • Rods are located outside the macula and extend all the way to the outer edge of the retina. They provide peripheral or side vision. Rods also allow the eyes to detect motion and help us see in dim light and at night.

  • Retinal pigment epithelium: Abbreviated RPE, this is a tissue layer below the rods and cones which absorbs any extra, unneeded light.
  • Choroid: The choroid is behind the retina, and is in charge of making sure the retina and RPE have enough nutrition flowing from small blood vessels.

Once the photoreceptors have converted light into an electronic signal, they send a signal to the brain’s visual command center and you have vision. It’s amazing what even small parts of our bodies can do.

 

How the Eye Works

January is Glaucoma Awareness Month

National Glaucoma Awareness Month reminds all of us to get regular eye exams and show support for those suffering from this condition.  Glaucoma is one of the leading causes of vision loss and blindness.  Glaucoma is often called “the sneak thief of sight” because glaucoma has few symptoms or warning signs in its early stages. It can be diagnosed only by a full eye exam by an eye care practitioner.

Glaucoma is a disease where pressure builds up and damages the eye’s optic nerve. Types of this disease include the common Primary Open Angle Glaucoma, which causes peripheral eyesight to slowly diminish and is age-related. Angle Closure Glaucoma, where the fluid drainage system is narrow and closed so that the aqueous fluid remains in the front chamber of the eye and intraocular pressure rises; and Low Tension Glaucoma, where the optic nerve becomes damaged in spite of the intraocular pressures being within the normal range. There’s currently no way to restore vision lost from glaucoma because once the nerve cells become damaged, they do not regenerate.

 

A few important facts you should know about Glaucoma in adults:

  • More patients than ever are affected – Over 3 million people in the U.S. have glaucoma, and the number is rising.
  • Glaucoma can affect people of all ages – The most common form of glaucoma, Primary Open Angle Glaucoma, becomes more prevalent with increasing age. However, glaucoma can strike anyone, even infants and children but it is rare.
  • Demographics do play a role – Glaucoma is a leading cause of blindness among African Americans; it’s also highly prevalent in Hispanics over the age 65.
  • Is glaucoma hereditary? The risk of developing Primary Open–Angle Glaucoma is up to nine times more likely if parents or siblings have the disease.
  • Hope for future glaucoma patients – Although there is no cure for any form of glaucoma, early diagnosis and treatment help control the disease and slow the process of vision loss or blindness.

Newer Glaucoma Treatments 

Glaucoma treatment usually begins with the use of topical (eye drop) medications which lower the intraocular pressure. Within the past two years, two new topical medications have been approved for the treatment of glaucoma: VYZULTA® and Rhopressa®. VYZULTA® is a modification of a class of medications currently used to treat glaucoma – the prostaglandin analogs. This drug helps lower intraocular pressure by increasing the drainage of fluid (aqueous humor) from the eye.

Rhopressa® is part of a new class of drugs used to treat glaucoma called Rho kinase inhibitors. Rhopressa®, like VYZULTA®, also lowers intraocular pressure by increasing aqueous outflow. Both Rhopressa® and VYZULTA® are dosed once daily and pose few, if any, systemic safety concerns.
 

Laser

Using a laser to make a small opening in the iris to help with fluid drainage usually cures Angle-Closure Glaucoma.  This procedure is called a laser peripheral iridotomy.

For Primary Open Angel Glaucoma, when eye drops are not enough to reduce the pressure then a procedure called Selective Laser Trabeculoplasty (SLT) can be used. The SLT reduces intraocular pressure by stimulating increased outflow of fluid from the eye. SLT offers an improved safety profile compared to older glaucoma laser therapies and may lower eye pressure by as much as 20 to 30 percent. It is typically used as the next step in patients whose glaucoma is uncontrolled on medical therapy. Because of its excellent benefit-to-risk profile, however, SLT can sometimes be used in place of medications, especially in patients who have difficulty with their eye drops.
 

Surgery

When other treatments fail, there are many surgical therapies to lower the eye pressure. These surgical approaches, which are riskier than medical therapy or lasers, are usually employed when non-surgical means do not work well enough to stop vision loss.
 

MIGS

The goal of Minimally Invasive Glaucoma Surgery (MIGS) is to reduce intraocular pressure by enhancing the eye’s own internal aqueous humor drainage system. Some MIGS can be performed as stand-alone procedures, while others are typically done along with cataract surgery in patients with visually significant cataracts and mild to moderate glaucoma.

There are now a variety of recently FDA approved MIGS available for use in this country. MIGS typically are performed through a small incision in the eye with minimal tissue trauma and offer a favorable safety profile as well as more rapid visual recovery than traditional glaucoma surgery. There are many well qualified glaucoma specialists that perform the MIGS procedure.

 

Glaucoma Treatment Overview


 

National Glaucoma Awareness Month reminds all of us to get regular eye exams. Don’t let glaucoma steal your sight!  The best way to protect your sight is to get an annual comprehensive eye examination.

Thanks to funding from private philanthropists, DEF’s research continues to make great strides toward cures and treatment for glaucoma.  If you would like to support DEF’s sight saving research please donate today!

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