A New Commitment to Vision

Meet Tom Sullivan – DEF’s Ambassador of Vision

Over the last 40 years, I’ve been committed to working on behalf of blind children and their families.  My involvement has spanned the entire gamut of participation – from direct involvement in the classroom and counseling parents to hosting organized 10K races and celebrity golf tournaments that carried my name.  In that time, my wife and I raised just over $8 million thanks to the generosity of so many people.  Though my commitment to this cause has not changed, I’ve chosen to take on a new challenge that has in every way re-energized my passion. 

I’ve recently become the Ambassador of Vision for the Discovery Eye Foundation (DEF), a remarkable organization that funds cutting edge research that I believe someday will eliminate many forms of blindness.  The principle reason for my enthusiastic commitment is largely due to the fact that DEF directly funds researchers and avoids institutional restrictions.

As of this blog, DEF is engaged in ongoing efforts to understand 5 main eye diseases – Retinitis Pigmentosa, Macular Degeneration, Keratoconus, Diabetic Retinopathy, and Glaucoma.  I can honestly tell you that breakthroughs are not only on the horizon, but in many cases they are imminent.  Over the weeks and months I’ll be telling you much more, specifically about our individual research projects.  

Any help you may choose to give on behalf of people struggling with vision loss will be deeply appreciated. I look forward to having many of you join my fight for sight. Your help can make a difference! Click here to donate.

 

Tom Sullivan
DEF’s Ambassador of Vision
sullivanvision.com

 

 

A Second Vision

Kristin McDonald

For the last few years Kristin McDonald, a former actress and television spokeswoman, has been applying her make-up without the aid of her eyes due to retinitis pigmentosa, a condition that reduces a person’s peripheral vision until all that is left is a pinpoint of sight.

Today, she is in a first stage study that is offering her and others hope that the injection of stem cells might be the mechanism that could slow, and maybe even halt the effects of this horrible disease. Discovery Eye Foundation helped support many of the preliminary translational studies necessary to bring the clinical trial to the FDA and get this exciting, novel approach to the patients.

I am Tom Sullivan, Ambassador of Vision for the Discovery Eye Foundation, and I was rocked when my phone rang recently and I heard the sound of my friend Kristin crying.

“What’s the matter?” I asked with real concern.

Her tears were quickly replaced by laughter, joyous laughter.

“It might be working,” she said, “I mean, the cells just might be having an impact.”

“Meaning your feeling change in your vision?” I asked. 

“Tom,” she went on, “you won’t believe it. This morning when I was getting dressed and putting on my make-up, I saw my mascara in the mirror. Listen, I am not trying to tell you I can see, but since the cells were injected, I can focus on a light and even begin to notice shadows.”

“And, now,” she laughed again, “maybe I can put my mascara on straight!”

Kristin has no illusions about how far the injection of cells will take her; but, she is encouraged, as are many of the other patients who are part of Dr. Henry Klassen’s clinical study helped by DEF’s early stage funding.  Maybe the old phrase really does apply – you probably know the one I mean – “hope springs eternal in the human breast.” That goes for the researchers, the patients, and all of us who treasure the gift of sight.

To read more about Kristin McDonald, visit her website at secondvision.net

 

Tom Sullivan
DEF’s Ambassador of Vision
sullivanvision.com

Chlorine & Your Eyes

Summer time is officially here and everyone enjoys a dip in a nice, cool pool during the summer months.  While swimming is a great form of exercise and a relaxing way to cool down, the water can be hard on your eyes.

What Chlorine Does to Your Eyes –

Yes chlorine can make your eyes red!  But the real dangers in pool water aren’t just a result of your eyes coming in contact with the chemical. The redness and discomfort that sometimes accompany swimming can be caused by bacteria that linger in the water. When submerged in chlorine-treated water, your eyes lose the tear film that protects against infection.  Even though the purpose of chlorine in pools is to reduce the amount of harmful bugs, some contaminants are resistant to the chlorine that is used. This means the health of your eyes can be compromised with infections caused by bugs still lingering in the water.  

This can result in these three common eye issues:

  • Pink eye or conjunctivitis – This is one of the most common eye infections swimmers can get, as it can be either viral or bacterial and spreads quickly and easily through the water.
  • Red, irritated eyes –  This is a result of your eyes becoming dehydrated due to the chlorine and the removal of your tear film. Sometimes you may also experience blurriness and distorted vision, this is usually only temporary.
  • Acanthamoebic keratitis – This is a severe eye infection that is caused by amoeba in the water becoming trapped between the cornea and the contact lens. It can begin to live there, which can result in ulcers on your cornea and permanent damage to your vision.

 

Swimming with Contact Lenses  

Wearing contact lenses in any type of water—including a pool, hot tub, ocean or lake—puts you at higher risk for a corneal infection. Bacteria and other microbes can grow on the lenses even after just one swim. Because contact lenses sit on your eyes for an extended period of time, your eyes are then continuously exposed to chemicals, bacteria, fungi or parasites after you swim. That can lead to a painful infection, corneal damage, and even loss of vision.

To avoid any kind of infection, remove contacts altogether when swimming or use swim goggles. You can get prescription swimming goggles to help keep your vision clear and eyes healthy in the pool. Talk with your eye care provider for more information about the different kinds of swim goggles available.

If you have any of these eye infection symptoms are increasing one hour or longer after swimming, see your eye doctor right away.

Redness
Pain
Tearing
Being very sensitive to light
Blurry vision
Sensation of having something in your eye
Discharge from your eye
Eye swelling
 

With all of these risks to your eyes from chlorine, swimming might seem a bit scarier than before. However, there is no need to panic!  By taking a few safety measures, you can protect your eyes and still enjoy your time in the pool.

 

  • Wear Goggles – Wear a pair of swim goggles every time you swim. Goggles keep pool chemicals out of your eyes.

 

 

 

 

  • Wash Your Eyes – Immediately after swimming, splash your closed eyes with fresh tap water.  This washes chlorine and other chemicals off your eyelids and eyelashes.

 

 

 

  • Use Eye Drops – Use over-the-counter lubricating eye drops before and after swimming to keep the tear film balanced and eyes comfortable.

 

 

  • or Use Gel Tears – If you have dry eye, thicker artificial tears called gel tears will help protect your tear film, use these drops before putting on your goggles.

 

 

  • Stay Hydrated – Don’t forget to drink plenty of water. Staying well hydrated is an important part of keeping your eyes moist and comfortable.

 

 

Don’t miss out on the fun this summer! By taking these easy steps whenever you decide to take a dive, you can have peace of mind that your eyes and your vision are protected.

 

 

Is That a Stye or a Chalazion On My Eye?

How We Get Them & How We Get Rid Of Them

Do you have something that looks like a pimple on the outside or inside your eyelid? Is it terribly uncomfortable and unsightly?  You either have a stye or a chalazion on your eye.  

 

Chalazion is a non-infected swelling of the lid caused by a blocked lipid gland. Lipid from the blocked gland leaks into the eye lid tissue causing an inflammation which eventually clears the irritating lipid. This can take 2 to 4 weeks or more.

 

Styes are caused by bacteria from your skin that gets into and irritates the oil glands in the eyelids. These bacteria, which normally exist harmlessly on the skin of the eye, can sometimes get trapped along with dead skin cells on the edge of the eyelid. The result is a swollen, red, and painful bump that can develop over the course of a few days.

While most styes or chalazions are harmless and will heal on their own in about a week or two, they can still be thoroughly unpleasant. Fortunately, there are a few remedies that may help you get rid of a stye or chalazion a little faster — or at least reduce some of the discomfort and swelling that often accompany them.

Keep Your Eyelids Clean

  • The first thing you should do if you develop a stye is cleanse your eyelids. You can use diluted tear-free baby shampoo on a cotton ball, washcloth, or makeup remover pad. Then rinse your eyelids with warm water and gently pat them dry.
  • Also, be sure to wash your hands before and after touching the stye, and don’t share your towels or washcloths with others.
  • Pre-moistened eyelid cleansing pads are another option. You can find these non-prescription items in most drugstores.
  • It’s wise to stop wearing eye makeup temporarily when you have a stye or chalazion, because covering it up can delay the healing process. Also, discard old makeup or applicators that could be contaminated.
  • And if you need vision correction, wear glasses rather than contact lenses until your stye heals.

Apply Warm, Moist Compresses

  • You can encourage a stye or chalazion to heal faster by applying hot compresses for 10 to 15 minutes, three or four times a day.
  • Some people use teabags for this purpose, but a basic clean washcloth dipped in warm (not hot) water will do the trick and is easy to prepare. Wring the cloth so it’s not dripping, then place it over your closed eyes.
  • The goal of this therapy is to bring the stye or chalazionto a head, like you see on a pimple. But whatever you do, don’t get anxious and try to pop it! The warmth from the compress often will allow it to open, drain and heal on its own without causing trauma to the eyelid or possibly spreading an infection by squeezing it.

Ease the Discomfort

  • Over-the-counter painkillers like acetaminophen and ibuprofen probably won’t do much to speed healing, but these medications may ease discomfort if a stye is particularly bothersome.
  • Your eye doctor can also address pain associated with styes or chalazions. Sometimes, your eye doctor may choose to surgically open a large stye to relieve discomfort and prevent a serious infection.

Always consult a medical professional if you have concerns, pain, or if an external stye that does not clear up within one week or an internal one (on the inside of the eyelid) in three weeks.

National Glaucoma Awareness Month

January is National Glaucoma Awareness Month –                                    An important time to raise awareness for this sight-robbing disease.

Glaucoma is an age-related disease and is the second leading cause of irreversible blindness in people over 40. Glaucoma is 6 to 8 times more common in African Americans than Caucasians. If you have a close blood relative with glaucoma, it raises your risk of getting it.

Glaucoma is the sneak thief of sight, since there are no symptoms and once vision is lost, it’s permanent. As much as 40% of vision can be lost without a person noticing. 

More than 3 million people in the United States and over 60 million people worldwide, have glaucoma. Experts estimate that half of them don’t know they have it. Combined with our aging population, we can see an epidemic of blindness looming if we don’t raise awareness about the importance of regular eye examinations to preserve vision.

How to Help Raise Awareness

In the United States, approximately 120,000 are blind from glaucoma. Here are three ways you can help raise awareness:

talk to your family about glaucoma awareness
Talk to your friends and family
  • Talk to friends and family about glaucoma. Do not keep it a secret. Let your family members know.
  • Get involved in your community, educational seminars, support groups, and more.

 

What is Glaucoma?

Glaucoma is a disease that causes damage to the major nerve of the eye called the opdevelopment of glaucomatic 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.

There is no cure for glaucoma—yet. However, medication or surgery can slow or prevent further vision loss. The appropriate treatment depends upon the type of glaucoma among other factors. Early detection is vital to stopping the progress of the disease.

 

Risk Factors

How do you know if you are at risk for glaucoma? Those at higher risk include people of African, Asian, and Hispanic descent. Other high-risk groups include: people over 60, family members of those already diagnosed, diabetics, and people who are severely nearsighted.

Regular eye exams are especially important for those at higher risk for glaucoma, and may help to prevent unnecessary vision loss. In the most common form, there are virtually no symptoms. Vision loss begins with peripheral or side vision, so if you have glaucoma, you may not notice anything until significant vision is lost.

 

Getting your eyes checked by an ophthalmologist regularly will be the best way to detect glaucoma or any other eye disease early.

 

Low Vision and Smart Phones

Many of us just use the basics on our smart phone and never personalize them for our own needs. It is worth taking the time to adjust our phones to take advantage of the special services that may be available and unused. Making a phone call or sending a text message with a smart phone can be challenging, however, with simple modifications, keeping in touch with the world can become a snap. Getting comfortable with your smart phone will make staying in touch with your loved ones very easy.

If you’ve used a smartphone these past several years you already know that a great deal of voice command capabilities come built in to most current models, so you can verbally instruct your smartphone to “Call my wife,” or “Read my last text message.” The smart phone has been a wonderful addition to the world of technology; with built-in accessibility features these phones have provided individuals with visual impairments the ability to carry out several activities that have been difficult without the use of a magnifier or other assistive device.

One way to make it easier to see the names in your contact list is to magnify the text on the screen. After tapping the “SETTINGS” icon on your home screen, you will find “ACCESSIBILITY” features under General Settings or Personal Set-up. Accessibility features can be used to visually enhance the use of your smart phone. Adjusting the size of the text, under the “LARGER TEXT” selection can magnify the print in your contact list so that names are easier to see. Simply sliding the prompt on the larger text screen to the right will enlarge print throughout your smart phone: phone contacts, text messages and emails.

Despite enlarging text, you still may find it difficult to see contacts on your screen. That is where tools called “VOICE ASSISTANTS” or “TEXT-TO-SPEECH” can make it less stressful for you. After you have enabled the settings, you can engage them by speaking into your unit’s microphone. On most phones, this feature can be turned on by holding down the home button. Once you hear a beep, you say the name of a person or business. You can access your contact list by asking your voice assistant to call people from your contact list or by reciting the phone number you are trying to connect to.

Tips for a Better Low-Vision Phone Experience

Whether you use some or all of the low-vision phone features described in this article, there are still more things you can do to improve phone usability that don’t require a trip to Accessibility settings. Some involve choosing hardware and software, others are simple, and cost nothing.

  • Right-size your phone: How much magnification you need depends on your vision, of course, but also on the size of the phone you choose. If you need a high level of zoom, or larger text, you might want to pick a phone with a larger screen, which will allow more of the screen contents to remain visible when you zoom or crank up the font size. You’ll find Android and iOS phones with screens up to 5.7 inches. Tablets are bigger. The challenge of a large phone for some low-vision users is the need to hold the device close to your eyes to view it. Before you choose a phone, be sure to handle and use the model you’re planning to buy.

  • High-contrast wallpaper: You can change the background of your Home screen by turning any photo into wallpaper, or picking from wallpapers already available on the device. Using a solid color, rather than a busy photo that obscures your app icons and the text on the Home screen can make it much easier to locate text and icons. If a solid background seems boring, try a starry sky or snowy scene, for a dark or light look, respectively.

  • Apps with dark mode and/or font size options: Apps that focus on reading and navigation often have their own accessibility-enhancing options. Apple’s iBooks and Amazon’s Kindle app allow you to change font size, and even typeface, as well as changing the background or text color of what you’re reading. Seek out apps that compensate for what might be missing in your phone’s operating system, or that simply offer a better experience.

Get the Most from your Phone

The good news about smartphones is that they all provide features to support those with low-vision or whose eyesight has simply changed due to age. Your challenge is to try out as many of these features as possible, and decide which ones are right for you.

For tips and instruction on how to use smartphone (Iphone/Android) if you have low vision:

How a visually impaired person can use a smartphone

How To Set Up An Android Phone/Tablet For Low 

How I Use My iPhone 7 Plus | Life, Legally Blind 

How to Lessen Computer Vision Syndrome

Your eyes are your window to the world – but your eyes get a lot of extra strain thanks to the advent of new technology. Especially at work, we’re looking at screens of all different sizes and types all the time. And what happens to our eyes can be more than just a case of tired muscles; in fact, it’s got a name – computer vision syndrome.

The cause of that is obvious – lots of screens, as we said, and often multiple screens. In addition to computer vision syndrome, sufferers can feel headaches and eye fatigue among other symptoms. Luckily there are steps you can take to reduce or mitigate the chance of eye strain. Setting up a work station properly can help, as can anti-glare screens or placement of technology in relationship to sources of natural light.

If you’re focused on the health of your eyes, this graphic is an absolute must-read.

How to Protect Your Eyes in the Digital Age

thumbnail_eugene
Eugene Feygin
Program Manager at Quill.com

Understanding Your Eyeglass 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 Prescription

Understanding What 20/20 Vision Means

The number is based on you standing a distance of 20 feet (considered to be the norm) in front of a Snellen or Tumbling E 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 visual acuity. If you can read the fourth line from the bottom of most charts, you 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 as your eyes are designed to compensate for each other and would not give an accurate reading.

Understanding Your Eyeglass Prescription

The prescription you receive may be a chart 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 first.

  • 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 D CYL +5.00 Axis 40 means you have a nearsightedness of -2.50 dioptics 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 are 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 may be well worth it. Eye glasses are an investment in your safety, job, independence and letting you enjoy any leisure-time activities you enjoy.

2/9/16

 

Susan DeRemerSusan DeRemer, CFRE
Discovery Eye Foundation

Low Vision Aging Adults at Higher Risk for Falls

Low vision in aging adults varies as do the occupational therapy techniques that might help older adults in becoming more independent. Mr. P has glaucoma resulting in a narrowed field of view. He is light sensitive, and keeps his blinds closed, darkening the house. He is responsible for doing his laundry, yet his washer and dryer are in the basement, causing a safety concern. Mrs. K has macular degeneration with 20/400 visual acuity. She has severely reduced contrast sensitivity, and can no longer drive or recognize faces easily. She no longer gets to the senior center for regular exercise sessions, which is concerning to her and her OT. Ms. T was diagnosed with diabetic retinopathy. She has struggled for years to accurately see her glucometer and insulin. She has recently developed peripheral neuropathy, leading to wheelchair dependency. Each of these patients is likely to leave their home less often because of their low vision, eventually leading to a decline in lower extremity weakness, balance, endurance and confidence. The fear of falling leads to more isolation, which can cause even more lower extremity weakness, problems with balance, decreased endurance, and even depression. The irony is that this cycle, which began with caution and a fear of falling, lends itself to exactly that. . .a fall.

Why are low-vision aging adults at higher risk for falls?

According to the CDC, “Each year, millions of older people-those 65 and older-fall. In fact, one out of three older people fall each year, but less than half tell their doctor. Falling once doubles your chances of falling again.” The typical aging adult with low vision faces challenges that others do not. Difficulty seeing details combined with reduced contrast sensitivity leads to a decline in mobility and socialization.
risk for falls
risk for falls
So how do we help older adults with low vision lower their risk for falling? When considering safety within the home, persons with low vision must make it a priority to add lighting & contrast whenever possible. Consider all rooms of the house, including entrances, hallways and stairways.

  • Placement of night lights in hallways, stairway, etc.

    •  

  • Keep flashlights in accessible places throughout the home where night lights are not possible.

    •  

  • Instead of closing blinds, keep them open & wear appropriate colored filters to manage glare/light sensitivity.

    •  

  • Small battery operated stick-on lights or rope lighting is inexpensive, and easy to place on steps to light up a stairwell.

    •  

  • Line edge of steps, or stairway railing with brightly colored duct tape to increase visibility.

    •  

  • Make sure grab bars, tub benches, shower chair are high contrast, to be most visible.

    •  

  • Remove throw rugs, with the exception of those providing function, such as the one at the entrance and bathtub. Their purpose is for providing dry shoes and feet, but they should have a non-skid back and a high contrast color to “stand out.”

    •  

  • Reduce clutter in rooms to increase safety by removing items from floors, walkways and stairwells.

    •  

  • Consider investing in a Medical Alert System to provide added piece of mind, confidence, especially when living alone.

Persons with low vision can decrease their frequency of falls by staying social and walking in the community. Unfortunately, many low vision adults become more house bound when they can no longer drive. Locating sources of alternative transportation may be helpful. Seeing faces is difficult, making socializing a challenge, which can lead to depression. The following recommendations take into consideration the challenges of not seeing details or across the visual field normally, while improving lower body strength, endurance, coordination, confidence, and hopefully reducing the risk of a fall.

  • Encourage regular trips to the grocery stores and the mall to keep physically fit. Malls are safe environments to walk around because of wide, straight hallways. Use magnifiers to see price tag/label details, or take advantage of personal shoppers who assist with locating items.

    •  

  • Participate in regularly scheduled exercise sessions (videos, groups, etc). Sit/stand in the front row, ask instructor to provide clear verbal instruction, instead of only demonstration. Consider hiring a personal trainer in order to get 1:1 instructions for how to use exercise equipment. If watching a video, move closer to your largest TV screen. Home exercise equipment can be labeled with high contrast markings to increase visibility of its details.

    •  

  • Consider joining a senior center in the community. Some have low vision support groups.

    •  

  • Access driving alternatives, such as the Smart Bus, Senior Centers, Local Volunteer or Church groups. Consider using money previously spent for a car and its expenses to hire a private driver.

    •  

  • Use appropriate colored filters in bright outside conditions or darker inside environments (i.e. Amber outside in the sun; Yellow inside a dark restaurant or outside with overcast weather).

    •  

  • Consider using a walker or support cane when walking longer distances in the community or neighborhood. Many individuals decline using an assistive device, not realizing how active and fit it can make them. Rolling walkers are even available with seats, allowing for rest breaks wherever necessary.

While the fear of falling is great amongst all seniors, those with low vision need to consider adding strategies that specifically benefit them. Making changes within the home may be as simple as improving lighting and contrast. Remaining physically fit outside of the home may be done with shopping or exercise equipment, but either way staying active will improve confidence, the fear of falling, and hopefully decrease the chance of a fall. If you are unsure of what approach is best for you, consult with your ophthalmologist about scheduling a low vision eye exam and occupational therapy.

Reference:
Centers for Disease Control and Prevention, National Center for Injury Prevention and Control-CDC 24/7: Saving Lives, Protecting People

12/3/15

Annette Babinski's headshot thumbnailAnnette M. Babinski, OTR/L CLVT
Henry Ford Health System
Vision Rehabilitation Center
 
 
 
 
 

Michelle Buck's headshot thumbnailMichelle Buck, MS, OTR/L CLVT
Henry Ford Health System
Vision Rehabilitation Center

General Differences Between Polarized and Absorptive Lenses

Polarized and Absorptive Lenses

Polarized and Absorptive Lenses
Polarized lenses can be helpful in reducing glare; in fact, they were first developed to help with glare from outdoor sports and activities. Here is a passage from All About Vision that explains the basics of polarized lenses very well.

Light reflected from surfaces such as a flat road or smooth water generally is horizontally polarized. This means that, instead of light being scattered in all directions in more usual ways, reflected light generally travels in a more horizontally oriented direction. This creates an annoying and sometimes dangerous intensity of light that we experience as glare. Polarized lenses contain a special filter that blocks this type of intense reflected light, reducing glare.

Though polarized sunglasses improve comfort and visibility, you will encounter some instances when these lenses may not be advisable. One example is downhill skiing, where you don’t want to block light reflecting off icy patches because this alerts skiers to hazards they are approaching. In addition, polarized lenses may reduce the visibility of images produced by liquid crystal displays (LCDs) or light-emitting diode displays (LEDs) found on the dashboards of some cars or in other places such as the digital screens on automatic teller machines and self-service gas pumps. With polarized lenses, you also may be unable to see your cell phone or GPS device.

Boaters and pilots also have reported similar problems when viewing LCD displays on instrument panels, which can be a crucial issue when it comes to making split-second decisions based strictly on information displayed on a panel. (Some manufacturers of these devices have changed their products to solve the problem, but many have not yet done so.) Many polarized lenses are available in combination with other features that can enhance outdoor experiences.

Absorptive Sunlenses/Sunglasses do a little more than just reduce glare.

These are special wraparound sunglasses that filter out ultraviolet (UV) and infrared (IR) light. I explained those two types of light in my post. In addition to reducing glare, they can also increase contrast, which is important for visibility.

They also come in a variety of tints: dark gray-green, medium amber, medium gray, medium plum, yellow, orange, amber, and light orange. Many of the available tints/colors also have a percentage sign. The percentage sign represents the amount/percent of visible light that is transmitted through the lens. Here are some examples:

  • 32% medium gray
  • 10% medium amber
  • 2% dark gray-green
  • 20% medium plum
  • 65% yellow
  • 49% orange
  • 16% amber
  • 52% light orange

It is the tint – in combination with the amount of light transmission of each tint – that is helpful for people with glare issues. There are a few manufacturer websites that explain the range of absorptive lenses very well.

The first is NoIR Medical Technologies (NoIR stands for “No Infra-red” light.) You’ll see that there are different colors and tints, and many of the colors also have a percentage sign. The percentage sign represents the amount/percent of visible light transmitted through the lens.

Generally, NoIR recommends the following for people with glare problems:

  • 32% Grey
  • 13% Dark Grey
  • 18% Grey
  • 40% Grey-Green
  • 20% Plum
  • 16% Amber
  • 10% Amber
  • 54% Yellow

You can see from the list that the color does not have to be extremely dark for the lenses to reduce glare and light sensitivity.

Also, Eschenback Optik provides a good overview of Solar Shields, another type of absorptive lens product.

Most styles of absorptive lenses also can be fitted over prescription lenses. The bottom line is that it’s probably necessary to visit an office that carries a supply of these lenses and determine which color, tint, and percentage of light transmission is right for your wife. It’s helpful to compare several styles to determine what tint and percentage of light transmission work best.

10/27/15


Maureen Duffy, CVRTMaureen A. Duffy, CVRT, LVT
Social Media Specialist, visionaware.org
Associate Editor, Journal of Visual Impairment & Blindness
Adjunct Faculty, Salus University/College of Education and Rehabilitation