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 Your Eyeglass PrescriptionUnderstanding 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.

May is Healthy Vision Month

Vision loss can have a major impact on every part of life. Having a visual impairment can create challenges in performing everyday tasks, and the stigma around losing vision can be isolating — causing feelings of fear, anxiety, or depression. But you’re not alone.

Healthy Vision Month 2024 is focused on helping people with a visual impairment know how to access vision rehabilitation services, mental health support, and social connections.  

Get involved in Healthy Vision Month 2024 and reframe your future by helping yourself and others with a visual impairment live their best lives with vision loss. 

Taking steps to care for your eyes can help prevent vision loss.

  • Get a Dilated Eye Exam: a dilated eye exam can detect eye diseases at an early stage when there are no symptoms. To perform a dilated eye exam, your eye care professional puts drops in the eyes to dilate, or widen, the pupil so he or she can get a good look at the back of the eye. Early detection and treatment of eye diseases such as glaucoma or diabetic retinopathy can slow or stop vision loss and reduce the risk of blindness. Talk to your eye doctor about how often you should have a dilated eye exam.
  • Be Aware of Risk Factors: The risk of vision loss and blindness is higher for some people based on race, ethnicity, and other demographic factors. Knowing about your family’s health is helpful to maintain your own eye health. Talk to your family members about their eye health history. It is important to know if anyone has been diagnosed with an eye disease, since some, such as glaucoma and diabetes have a hereditary component.
  • Use protective eyewear: Protect your eyes when doing chores around the house, working in the garden, playing sports, or on the job, to prevent eye injuries from happening. This includes wearing safety glasses, goggles, safety shields, and eye guards that are made of polycarbonate.
  • Wear sunglasses: When purchasing sunglasses, look for ones that block out 99 to 100% of both UVA and UVB radiation, so you can keep your vision sharp and eyes healthy. A hat offers great sun protection, too!
  • Wash your hands: Before taking out your contacts and cleanse your contact lenses properly to avoid infection, be sure to make sure your hands are clean. Use only properly designated contact lens cleaning solutions.

Live a healthy lifestyle – Eating healthy foods, maintaining a healthy weight, and not smoking can significantly lower your risk of eye disease.

Which foods to eat for healthy eyes – A balanced diet rich in essential nutrients, such as antioxidants, vitamins, and minerals, can support overall eye health. Foods high in antioxidants, like leafy greens and colorful fruits, are particularly beneficial. 

Eye Healthy Foods:

  • Leafy greens
  • Orange colored vegetables and fruit rich in Vitamin A (carrots, sweet potatoes, cantaloupe)
  • Fruits and vegetables rich in Vitamin C (oranges, grapefruit, lemons)
  • Food rich in Vitamin C (avocados, almonds, sunflower seeds)
  • Omega-3 fatty acids (found in fish)

Foods to Avoid:

  • High caffeine beverages
  • High-sodium foods
  • Excessive alcohol

Visit Eye Cook for eye healthy recipes.

Exercise regularly: Maintain a healthy weight with moderate exercise.  Endurance, strength, balance and flexibility training are options. But there is no reason to stick with just one, think about mixing it up to reduce boredom and risk of injury while you increase your overall fitness.

For this Healthy Vision Month, take care of your eyes to make them last a lifetime.

How To Protect Your Eyes During the April 8th Solar Eclipse

On April 8, a total solar eclipse will cross North America, the last time a total solar eclipse will be viewable from the continent until 2033. A total solar eclipse happens when the moon passes between the earth and the sun, temporarily blocking the view of the sun from a part of the earth. It’s an incredible and rare sight to behold — but looking at a total or partial eclipse can severely and permanently damage your eyes and eyesight if not done with proper protection. 

The major cities inside the path of the total eclipse are Mazatlan, Torreon, San Antonio, Austin, Dallas, Fort Worth, Indianapolis, Cleveland, Buffalo, Rochester, Syracuse, and Montreal. However a partial solar eclipse will be visible throughout most of the US — even observing a partial solar eclipse unprotected can damage your vision.

North America will experience totality again in 2033, when the next total eclipse crosses Alaska. In 2044, another total solar eclipse will occur and be visible in multiple continental U.S. states, including Montana and North Dakota. 

How to protect your eyes when watching a solar eclipse

  • To protect your eyes during an eclipse, you need special glasses. Never use sunglasses, as they do not offer proper protection. Make sure they meet safety requirements and are manufactured with the ISO 12312-2 standard. Look for ISO standard labeling when looking for solar eclipse glasses and purchase them from a trusted source.
  • Wear your solar eclipse glasses at all times when watching an annular or partial solar eclipse.
  • Make sure they fit well and cover both of your eyes. Avoid glasses that are too wide or large and could fall off your face.
  • Make sure they don’t have any scratches or other signs of wear and tear. If the glasses are damaged, do not use them, they are not safe to use.
  • Be sure to read and follow any directions included with your eclipse glasses.

How NOT to watch a solar eclipse

  • NEVER look at the sun directly.
  • Do NOT use your smartphone: Watching a solar eclipse on your smartphone camera can put you at risk of accidentally looking at the sun when trying to line up your camera. It could possibly also damage your smartphone camera. Don’t take the risk.
  • Do NOT use your camera viewfinder: Never look at a solar eclipse through the optical viewfinder of a camera. It can damage your eyes in the same way as looking directly at it.
  • Do NOT use unsafe filters: Unless specifically designed for viewing a solar eclipse, no filter is safe to use with any optical device (telescopes, binoculars, etc). All color film, black-and-white film that contains no silver, photographic negatives with images on them (x-rays and snapshots), smoked glass, sunglasses (single or multiple pairs), photographic neutral density filters and polarizing filters are unsafe filters to watch a solar eclipse. Also, solar filters designed for eyepieces that come with inexpensive telescopes are also unsafe. All of these items can increase your risk of damaging your eyes.

 

You can purchase your Solar Eclipse Glasses for a few dollars on Amazon: Solar Eclipse Glasses

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.

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.

 

 

Cataract Vision Simulator

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/

 

April is Women’s Eye Health Month

April is Women’s Eye Health Month to educate women about the steps they can take today to help preserve vision in the future.  Women make up most of the 4.4 million Americans age 40 and older who are visually impaired or blind. Some eye conditions can cause vision loss and even blindness. These include:

The easiest way to test for common eye problems is a dilated eye exam – in which your eye doctor uses drops to widen your pupils and check for common issues.  This exam is the best way to detect eye disease’s early stages.

Good Eye Habits to Lessen or Prevent Future Vision Problems

  • Receive an annual eye exam. Regular dilated eye exams help monitor your vision status.
  • Eat a healthy diet. Good nutrition is the key to good health, including your vision. Dark green vegetables have been shown to reduce the risk of age-related macular degeneration (AMD) potentially. Also, remember to keep your diet low in sodium and caffeine. Visit our website for eye healthy recipes. discoveryeye.org/eye-cook-delicious-food-health/
  • Quit smoking today. Crushing the habit of smoking can reduce the risk of a host of diseases such as cancer and respiratory issues. Smoking is the most important risk factor for AMD and progression.

Having healthy eyes not only keeps us alert but keeps us safe. It is of the utmost importance to keep our eyes safe and have regular eye exams to check for any problems.

To learn more about the Discovery Eye Foundation’s research, visit discoveryeye.org/research/our-research-projects/

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.

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

 

HAPPY NEW YEAR 2023

Thank You to all who helped support DEF this year!!

 Discovery Eye Foundation has been successful in 2022 and all because of very loyal and dedicated donors that continue to support sight-saving research.

  We are thankful for every gift you have given to the Discovery Eye Foundation.

Wishing you and yours a Healthy and Happy 2023!!!