UNDERSTANDING YOUR EYE PRESCRIPTION

If you need eyeglasses, it is because you were diagnosed with a refractive error during your eye exam. This means your eyes have trouble focusing and images can appear blurry. Types of refractive errors include being near-sighted (myopia), far-sighted (presbyopia) or having an astigmatism (your cornea is an irregular shape).

Understanding What 20/20 Vision Means

The number is based on you standing a distance of 20 feet in front of a standard eye chart to test your visual acuity. If during an eye test you can read the big E at the top of the eye chart, but none of the letters below that, your vision is considered 20/200. That means you can read a letter at 20 feet that people with “normal” vision can read at 200 feet, meaning you have very poor distance visual acuity. If you can read the seventh line from the top of most charts, your vision is 20/20. Any line below that would be 20/15 or below and indicates that you have exceptional visual acuity. Each eye is tested separately.

Understanding Your Eyeglass Prescription

The prescription you receive may be a form with headings that are filled in, or it may just be written out. In any case, it is written in a specific order, with the results for each eye listed separately.

OD is an abbreviation for oculus dexter, meaning right eye, while OS is oculus sinister, meaning left eye. If both eyes are being referred to the abbreviation you will see is OU (oculus uterque) meaning both eyes.

The next term on your prescription is Sphere (SPH) and is are measured in diopters (D). This number tells you how strong your lenses need to be to correct your vision. If this number has a minus sign (–), you are nearsighted; if the number has a plus sign (+) or is not preceded by any sign, you are farsighted.

Next may be cylinder (CYL), an indicator of the lens power if you have an astigmatism. The number for the CYL has the same format as the SPH, a minus sign (for the correction of nearsighted astigmatism) or a plus sign (for the correction of farsighted astigmatism). If there is no number given you either have no astigmatism, or your astigmatism is so slight that it is not really necessary to correct it.

If you do have a CYL number you will also have an axis number, based on a protractor scale that tells you where on the eye the astigmatism is found. For example,

SPH –2.50 CYL +5.00 Axis 40 means you have a nearsightedness of -2.50 diopters with an astigmatism of +5.00 along the 40 degree axis.

If you are getting bifocals or progressive lenses, there is another number called an “Add.” This number is the amount of additional correction your eyes need to focus at close distance and will always be a positive number, whether or not the + sign is there.

Needless to say, eyeglasses can be expensive, but understanding a prescription should help you understand why. The stronger the lens the more expensive it is and then with each adjustment, the cost also increases. Also, don’t forget that anti-glare or UV protective coatings add to the costs, but most people feel it is well worth it. Eye glasses are an investment in your safety, job, independence and letting you enjoy leisure-time activities you enjoy.

DEF’s Vision Legacy Society

We extend a heartfelt invitation to you to forge a vision legacy!

Join the Discovery Eye Foundation’s Vision Legacy Society!

By including us in your estate planning, you can make a significant impact on the preservation of vision through a gift that will transform countless lives.

Your Vision Legacy Gift could help fund our sight-saving initiatives.

Support the groundbreaking research and the development of preventive measures and innovative treatments for debilitating eye diseases, including:

Age-related Eye Diseases
Macular Degeneration (AMD)
Diabetic Retinopathy
Retinitis Pigmentosa
Glaucoma
Keratoconus
Dry Eye

WAYS TO GIVE

Include us in your will, living trust, or estate plan
Designate DEF as a beneficiary in your will, living trust, or estate plan
Explore IRA charitable rollover options
Contribute through donor-advised funds
Create a charitable gift annuity
Establish endowment gifts for sustained research funding

WHAT TO GIVE

Cash Donations
Stocks
Bonds
Mutual Funds
Retirement Plan Assets
Real Estate Contributions
Insurance Policies

Your Vision Legacy Society Gift will further our goal of saving vision and making a profound impact on the gift of sight today and for generations to come.

For information we invite you to our interactive estate-planning website at: discoveryeye.mylegacygift.org/

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.

Back to School – Why Eye Exams are Important for your child!

Summer is almost over and it’s back to school season!

As parents, many of us are busy ensuring our kids are ready and prepared for the new school year; worrying about school supplies, new clothes, and new haircuts. There is always a long list of things to do before school starts. But something that often gets overlooked is getting your child’s eyes examined annually.

Early eye examinations are crucial to make sure children have normal, healthy vision so they can perform better at schoolwork and play. Early identification of a child’s vision problem can be crucial because children often are more responsive to treatment when problems are diagnosed early. Early eye exams also are important because children need the following basic skills related to good eyesight for learning:

Near vision
Distance vision
Binocular (two eyes) coordination
Eye movement skills
Focusing skills
Peripheral awareness
Hand-eye coordination

Parents also need to be alert for the presence of vision problems such as ‘crossed’ eyes or ‘lazy’ eye. These conditions can develop at a young age. ‘Crossed’ eyes or strabismus involves one or both eyes turning inward (towards the nose) or outward. Amblyopia, known as ‘lazy’ eye, is a lack of clear vision in one eye, which can’t be fully corrected with eyeglasses. Lazy eye often develops as a result of ‘crossed’ eyes, but may occur without noticeable signs. ‘Lazy’ eye can be treated if caught early.

In addition, parents should watch their child for indication of any delays in development, which may signal the presence of a vision problem. Difficulty with recognition of colors, shapes, letters and numbers can occur if there is a vision problem. Children generally will not voice complaints about their eyes, therefore parents should watch for signs that may indicate a vision problem, including:

Sitting close to the TV or holding a book too close
Squinting
Tilting their head
Constant eye rubbing
Extreme light sensitivity
Poor focusing
Poor visual tracking (following an object)
Abnormal alignment or movement of the eyes (after 6 months of age)
Chronic redness of the eyes
Chronic tearing of the eyes
A white pupil instead of black

Scheduling Eye Exams for Your Child

If eye problems are suspected during routine physical examinations, a referral should be made to an eye doctor for further evaluation. Eye doctors have specific equipment and training to assist them with spotting potential vision problems in children.

When scheduling an eye exam for your child, choose a time when he or she usually is alert and happy.

Glasses and Contacts – Keep these tips in mind for kids who wear glasses:

Plastic frames are best for children younger than 2.
Let kids pick their own frames.
If older kids wear metal frames, make sure they have spring hinges, which are more durable.
An elastic strap attached to the glasses will help keep them in place for active youngsters.
Kids with severe eye problems may need special lenses called high-index lenses, which are thinner and lighter than plastic lenses.
Polycarbonate lenses are best for all kids, especially those who play sports. Polycarbonate is a tough, shatterproof, clear thermoplastic used to make thin, light lenses. However, although they’re very impact-resistant, these lenses scratch more easily than plastic lenses.
Your eye doctor can help you decide what type of vision correction is best for your child.

Specialists state that 80% of what your youngster learns in school is taught visually. Untreated vision troubles can put children at a substantial disadvantage. Be certain to arrange that your child has a complete eye exam before school starts.

Blue Light: What Is It And How Does It Affect Your Eyes?

What Is Blue Light?

Blue light, also known as high-energy visible (HEV) light, is a color in the visible light spectrum that can be seen by human eyes. These wavelengths of visible and non-visible light are measured in nanometers (nm), and, in general, the shorter the wavelength, the higher the energy. Blue light is a short wavelength, which means it produces higher amounts of energy.

Unlike other forms of light, the eyes cannot effectively filter blue light, so more can pass through the eye to the retina. Blue light produces both benefits and concerns for our eyes and overall health.

Where Are You Exposed To Blue Light?

The largest source of blue light is sunlight. In addition, there are many other sources:

Fluorescent light
Fluorescent light bulbs
LED light
Flat screen LED televisions
Computer monitors, smart phones, and tablet screens

Blue light exposure you receive from screens is small compared to the amount of exposure from the sun. And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to an NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens.

Benefits of Blue Light?

Moderate amounts of blue light are essential for good health.

Promotes alertness
Boosts memory and cognitive function
Elevates mood
Regulates circadian rhythm

Blue Light and Digital Eyestrain

Using digital devices up close or for long periods can lead to digital eyestrain.

Research has shown that when people use computers, laptops, and other digital devices, they tend to blink less often than normal. Fewer blinks can mean less moisture.

Digital eyestrain means different things to different people, but is generally related to the focusing system of the eyes.

When your eyes are strained from staring at a blue-light-emitting screen, you might notice:

dry eyes
sore or irritated eyes
tired eyes
headaches
facial muscles fatigued by squinting

Blue light scatters more easily than most other visible light. This may make it difficult for your eye to focus when receiving blue light. Instead, your eye may digest blue light as poorly focused visual static. This reduction in contrast may make it more difficult for your eye to process blue light, potentially contributing to eyestrain.

Still, there isn’t enough evidence to confirm that blue light directly leads to eyestrain. More high-quality studies are needed.

How to Limit Blue Light Exposure

The American Academy of Ophthalmology (AAO) recommends that you take the steps below to reduce digital eyestrain.

1. Practice the 20/20/20 strategy

While you’re using a device that emits blue light, stop every 20 minutes to focus on objects that are around 20 feet away. Study those objects for 20 seconds before you return to your up-close viewing.
Keep your eyes moist
Eye drops, such as artificial tears, and room humidifiers are all good ways to keep your eyes from becoming too dry and irritated while you’re using blue-light-emitting devices.

2. Use eyeglasses with the right prescription

Squinting at screens for long periods isn’t recommended for the overall health of your eyes. If you wear prescription eyeglasses to correct your vision, make sure you’re wearing a prescription intended for the distance between your eyes and your screen — ideally an arm’s length away. Most glasses are formulated for longer distances.

3. Adjust the blue light on your screen

To lower the risk of eyestrain and sleep disturbance, you may want to set your screens to a “night shift” setting with warmer tones. You can also purchase blue-light-filtering screens to slip over your computer screen when you’re working at night. The filter could cut the glare of your screen.

And a 2020 research study shows that they block 30 to 60 percent of blue light, though it isn’t clear whether blocking the blue will help preserve the sleep-wake cycle for those who use backlit screens before bedtime.

June is Cataract Awareness Month

National Cataract Awareness Month is celebrated in June. The awareness campaign promotes information about the eye condition that is the leading cause of treatable vision loss in the U.S. Yes, this is a scary fact, but no need to be frightened because cataracts are treatable with an outpatient surgery, which has over a 97% success rate.*

Vision loss from cataract is caused by clouding on the lens of the eye. Cataract surgery removes the cloudy lens and replaces it with a crystal-clear artificial lens. This common eye condition mostly affects people over 50 and the causes can range from simple aging, diabetes, long-term eye diseases, and eye injury/inflammation, to factors like hereditary influences, smoking, intake of certain oral steroids, and so forth.

Although there may be no early symptoms, patients may begin to notice:

cloudy or blurry vision
colors that look faded
difficulty seeing at night
a halo around lights, making night driving difficult
seeing double out of the affected eye
frequent changes of the prescription of eyeglasses or contact lenses

YOUR DIET IS VERY IMPORTANT

A healthy diet may help reduce risk of and/or delay formation and progression of cataracts. Research suggests that a diet high in vitamin C-rich foods — citrus (oranges, kiwi, lemon, grapefruit), bell peppers, strawberries, tomatoes, cruciferous vegetables (broccoli, Brussels sprouts, cabbage, cauliflower) — is helpful in slowing the progression of cataracts. More importantly, adopting good nutrition is a cornerstone of optimizing health early in life and can greatly reduce the risk of developing age-related diseases including cataracts. For eye healthy recipes visit discoveryeye.org/eye-cook-delicious-food-health/

BE SURE TO HAVE AN ANNUAL EYE EXAM

By age 40, all adults should visit an eye specialist for a comprehensive eye exam to screen for early-stage cataracts and other eye diseases that are leading causes of low vision and even blindness. By age 65, a routine eye exam is recommended every year, in most cases to diagnose cataracts that are progressively clouding the lens. A comprehensive eye exam allows eye specialists to detect and monitor cataract progression as well as diagnosing other problems such as glaucoma. Patients should discuss with their eye specialist their vision problems and seek guidance about the timing of cataract surgery when worsening vision has compromised their quality of life and normal functioning.

LIVE A HEALTHY LIFESTYLE

Multiple factors are at play that increase our risk for developing a degenerative eye disease or vision compromising conditions as we age. If an individual lives long enough, then cataract formation is unavoidable. Living a healthy lifestyle, however, greatly improves an adult’s odds of avoiding early onset, faster progression, or possibly even avoiding the need for cataract surgery in the future.

WHY WE PROMOTE CATARACT AWARENESS MONTH

It’s a celebration of sight – The ability to see the world clearly and in all its glory is something we shouldn’t take for granted. Millions upon millions of cells perform complex operations in our eyes to allow us the gift of sight. We should take care of our eyes and appreciate our glorious vision for what it is.

It’s a celebration of science – Science has not only explained to us how intricately our eyes work, but it has also revealed to us the many ways we can repair and treat them in case things go south. Medical advancements have ensured that about 80% of all eye diseases are treatable or can be prevented.

It’s a celebration of modern surgery – There’s “always” light at the end of the tunnel. Today’s cataract surgery is a modern day miracle developed by dedicated surgeons over the last five decades. For most of us it is a painless, outpatient surgery with rapid return of excellent vision.

* https://my.clevelandclinic.org/health/treatments/21472-cataract-surgery

For more information about cataract:

https://discoveryeye.org/eye-conditions/cataracts/

February is AMD/Low Vision Awareness Month

Age-Related Macular Degeneration (AMD) Awareness Month is observed annually every February. It’s an awareness month targeted at spreading information about AMD and other sight threatening diseases that could lead to visual impairment.

AMD is a disease that is a leading cause of low vision in Americans older than 50 years of age. The macula is the part of the eye affected by this disease, a pigmented, oval-shaped part of the retina. About 5mm in diameter, it is responsible for the central vision required for driving, reading, and fine detail. AMD, is a progressive disease that causes retinal cells to slowly die, though it causes no physical pain.

Medical experts have been able to identify some risk factors that might lead to the onset of AMD, including high blood pressure, high levels of blood cholesterol, obesity, and smoking. Other risk factors that a person has no control over are age, heredity, race, and gender. Symptoms of the disease include blurry vision, blind spots, straight lines appearing wavy, doorways seeming crooked, and objects appearing farther away or smaller. When any of these symptoms present themselves, the concerned individual is advised to immediately visit an ophthalmologist.

Watch the video below to learn more about AMD presented by M. Cristina Kenney, MD, PhD

For more information on AMD and other visual impairments – EYE CONDITIONS

The Discovery Eye Foundation is committed to finding a treatment for Dry AMD which makes up 85% of AMD cases and for which there is no FDA approved treatment as yet. This could preserve the vision of millions of people. Luckily, there are treatments for Wet AMD. Right now, research supported by DEF at the Gavin Herbert Eye Institute, University of California Irvine, Medical School is on the cutting edge of promising breakthroughs that could make the difference in the lives of so many.

If you would like to help support DEF’s sight-saving research, click here DONATE NOW. Your generosity may help save your vision or that of someone you love.

How to Keep Your Eyes Comfortable During Winter Months

Harsh weather conditions can reduce the natural moisture in your eyes and the irritation usually results in a burning or itching sensation that often leads to rubbing or scratching your eyes which can worsen the symptoms. Sometimes it feels like there is a foreign object in your eye and for some, dry eyes can even cause excessive tearing, as your eyes try to overcompensate for their lack of protective tears. Prolonged, untreated dry eyes can lead to blurred vision as well. Between the harsh winter winds outside and the dry heat radiating inside, our eyes are very quickly irritated and dried in the winter months. The result is itchy, dry eyes that may cause pain, blurred vision, a burning sensation, or even watery vision as our eyes try to compensate for the dryness.

What Are The Symptoms?

Uncomfortable, stingy, burning or scratchy feeling.
Stringy mucus in or around your eyes
Increased eye irritation from smoke or wind
Eye fatigue
Sensitivity to light
Eye redness
A sensation of having something in your eyes
Difficulty wearing contact lenses
Periods of excessive tearing
Blurred vision, often worsening at the end of the day or after focusing for a prolonged period

10 TIPS TO KEEP YOUR EYES COMFORTABLE DURING THE WINTER MONTHS

Whatever the symptoms, dry eyes can cause significant discomfort during the long winters and relief can seriously improve your quality of life.

To keep eyes moist, apply artificial tears/eye drops a few times a day. If you have chronic dry eyes, speak to your eye doctor about the best product for your condition.
Drink a lot of fluids – keeping your body hydrated will also help maintain the moisture in your eyes.
If you spend a lot of time indoors in heated environments, use a humidifier to add some moisture back into the air.
Try to situate yourself away from sources of heat, especially if they are blowing. While a nice cozy fire can add to the perfect winter evening, make sure to keep your distance so dry eyes don’t ruin it.
Staring at a computer or digital device for extended amounts of time can further dry out your eyes. If you spend a lot of time staring at the screen, make sure you blink often and practice the 20/20/20 rule – every 20 minutes, look 20 feet away for 20 seconds. Use artificial tears often to lubricate eyes during long periods of using your eyes.
Avoid air blowing in your eyes. Don’t direct hair dryers, car heaters, air conditioners or fans toward your eyes. In your car, direct heat to floor vents and away from your eyes once your windshield is defrosted.
Stop smoking and avoid smoky environments.
Don’t rub your eyes! This will only increase irritation and can also lead to infections if your hands are not clean.
Give your eyes a break and break out your glasses. If your contact lenses are causing further irritation, take a break and wear your glasses for a few hours or days. Also talk to your optometrist about switching to contacts that are better for dry eyes.
Protect your eyes. If you know you are going to be venturing into harsh weather conditions, such as extreme cold or wind, make sure you wear protection. Try large, 100% UV protective eyeglasses and a hat with a visor to keep the wind and particles from getting near your eyes. If you are a winter sports enthusiast, make sure you wear well-fitted ski goggles.

If you find that after following these tips you continue to suffer, contact your eye doctor.

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.

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