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Photochromic Lenses

Lenses that darken automatically when exposed to various levels of light are called photochromic or light-adaptive lenses. This technology was discovered in the 1960s, but it didn’t really catch on until the 1990s. The convenience of photochromic lenses is huge: they’re basically like getting two complete pairs of glasses—regular glasses and sunglasses—in one!

How the technology works is pretty cool. In glass photochromic lenses, silver compounds are embedded into the lens material. When exposed to varying levels of sunlight, the compounds go through a chemical change that increases their size, allowing them to block out more light. Once the bright sunlight subsides, the molecules return to their normal size. Plastic light-adaptive lenses use similar photochromic molecules to create the darkening effect. The reaction that causes the material to darken as it absorbs varying levels of light is completely reversible which is why the lenses go back to clear or only slightly tinted when the wearer is out of bright sunlight.

The only issue you may encounter with light-adaptive lenses is that the photochromic reaction depends to some extent on temperature. In very hot weather, they may not darken all the way. When you first step into the sunlight, the darkening effect happens in about a minute. Over the next several minutes, they may darken just a little more, until achieving their final darkness after about 15 minutes (which depends on the brand and material of lenses). The first reaction will be drastic and give you more than enough light protection to continue into the sun with your vision protected.

If the final darkness of regular light-adaptive lenses isn’t dark enough for what you need, photochromic sunglasses can help. Their darkness when not in the sunlight is still darker than normal glasses. For that reason, most people don’t use these as their only pair of glasses because they won’t see as well indoors. They are a great option for people like drivers, for example, who spend a large part of their time shielding their eyes from sunlight and can wear their backup glasses in low-light settings. The other reason they’re good for drivers is that most windshields block out the UV light that causes the darkening reaction. With a UV-blocking windshield, bright light coming through your windshield will not cause your lenses to darken, leaving you squinting and straining.

There are some other interesting uses of photochromic technology. One medical application involves tinting for certain shades of red. These lenses can be used for various eye conditions including macular degeneration. Of course, there are further recreational uses of adapting tints, too. Red and green shades are used to make a fashion statement, but yellow and amber tints can be used in hunting and sporting glasses to help increase contrast, especially when it is cloudy. Tints can be applied and used in adaptive lenses in just about any color. Want to see the world through rose-colored glasses? It’s possible!

Talk to your eye care professional to test a pair of light-adaptive lenses and see how they’ll help make your everyday life a little easier.

The Importance of Pediatric Eye Exams

When it comes to pediatric care, parents are usually concerned with finding the best pediatrician and following their medical advice exactly, but what about pediatric eye care? Eye care for kids is sometimes an area parents overlook because they aren’t always aware of the importance of eye health for children. Many don’t seek eye exams for their children until either the child reports having difficulty seeing at school, or the child’s grades begin to slip and parents take a closer look at why their child isn’t developing academically.

Experts recommend that children receive several eye exams before starting school. Infants should receive their first comprehensive eye exam around six months of age. Children should have an eye exam around age three, and again when they reach age five or six. Before reaching first grade, parents are strongly encouraged to have their children receive a full eye exam to make sure the child has no visual problems as they start elementary school.

Eye exams for young children are important because vision problems can negatively affect a child’s performance in school long before you are aware of the issue. The American Optometric Association reports that 5 to 10 percent of preschoolers and 25 percent of school-age children are diagnosed with vision problems once they receive proper eye care. Experts are always stressing the significance of appropriate early education and full participation from youngsters in programs and learning that will become a foundation for critical skills. Children risk not being able to fully participate if they are experiencing undiagnosed visual impairments. An early eye exam and regular eye care for children can alleviate this potential problem.

Identifying eye problems early is crucial to the child’s learning and development in school. A child with poor vision may have difficulty with seeing text and comprehending words causing difficulty in reading. No parent wants their child to be frustrated with reading, especially when most vision problems are easily fixed with glasses. Unable to explain problems in a group, children may choose not to volunteer for reading in class out of embarrassment, or opt out of picking a library book because it’s hard to see. This will negatively affect academic achievement and the enjoyment that comes with reading for many children.

Other symptoms of learning-related vision problems include headaches or eyestrain, short attention span for visual tasks, difficulty identifying or reproducing shapes, poor hand-eye coordination, and developmental delay. Talk to your family eye care professional about scheduling eye care visits for your children. They will be more than happy to answer any questions you may have about your child’s eye health, and let you know when is a good time to start doing regular check-ups.

Polarized Sunglasses

Squinting into the sun and focusing in bright light is very hard on your eyes. Eye care professionals stress the importance of sunglasses and shading your eyes to protect your vision, but many people aren’t aware of the benefits that come from polarized lenses. They’re not just for fishermen to see into the water!

When you’re not on the dock or deck of your boat, you will continue to see the benefits of polarization. Polarized lenses can help cut glares off of surfaces like the road in front of you or the hood of your vehicle. Even bright light outdoors or through windows can be mellowed with polarized lenses.

The reason that polarized lenses work is that they cut out certain waves of light. Normal light tends to go in all directions, but light that bounces off of a surface tends to “polarize” and align itself horizontally. So sunlight beating down on the water doesn’t appear as ambient light once it bounces off the water, because it hits that reflective surface and bounces up, glaring into your eyes. Polarized lenses are specially made with a vertical polarization so that they cut out that intense reflected light and let you see more of the natural light you’d see if there was no glare. Pretty cool, right? You can even experiment with glasses to see if they’re polarized by holding them out and rotating the lens to see if the glare lessens or not.

Some people may notice instances where polarized lenses are not helpful, however. Cell phone screens, LCD and GPS displays can be more difficult to read. In some cases, much brighter light is something you need to see, like in downhill skiing. A bright patch alerts the skier to ice, and polarization would make it harder to see. But most everyday skiers and snowboarders would like to ease the bright light reflecting off of the snow if they’re not in icy conditions. Other than a few rare occasions, polarized lenses can do a lot to improve your vision for many applications. Ask your eye care professional for help deciding if polarization is right for your eyewear.

Golfing, Fishing, Winter Sports, and More

Just as sports officials are becoming more concerned with overall physical safety for athletes, more people are wearing specialized eyewear to protect their eyes and give them protection and sharp vision while performing their sport. Specialty eyewear options are available and tailored to just about every sport. All you have to do is know your sporting needs and talk to an eye care professional to discuss your options. It’s nice to know what to expect and what you can get other than just wearing contact lenses.

Here are some of the most common options and things to consider for glasses, goggles, or other specialty eyewear with unique capabilities to increase your sporting performance.

Darkened/tinted or photochromic lenses. Is your sport outdoors? Protection from bright sunlight and UV rays is crucial! Watersports and winter sports involve glares coming up from the snow or water. The bright light is damaging to your eyes and very uncomfortable if you’re not protected. Certain color tints can also help make sports glasses more functional. Golf glasses, for example, often use a copper or amber color that improves the contrast of grass and sky so you can read the course better. Make sure that you invest in glasses that will fit your outdoor setting.

Fitting with other gear. Eyewear for activities like motorsports, cycling, or football will need to fit with headgear. Be sure to test your eyewear with your uniform or additional gear, and talk to your eye care professional about the other items you’ll be wearing along with your eyewear.

Durability. In sports like racquetball, or really any sport with objects that are swung or flung around, you face the risk of getting hit and injuring your eyes if they’re not protected. This also means that your glasses or goggles are likely to take a beating while protecting your eyes. Scratch-resistance and high-impact polycarbonate materials are often used in sports eyewear to be sure that they will have a long life and will be able to shield your eyes from harm.

Considerations for contact lenses. Those who wear contact lenses and will be doing their sport in the elements can benefit greatly from glasses that wrap around the face. Protection from wind and debris will ensure that no irritants enter the eye and affect your contact lenses.

Protection from other substances. Watersports may come to mind when you think of goggles that protect your eyes from liquid, but there are other sports like paintball that could greatly damage the eyes if not protected. Specialty masks with breathable vents that allow air in will be sure to keep paint out. Goggles for watersports have similar features to keep water out of your eyes so you can see clearly under the water or above.

Polarized lenses. Probably the most important aspect of eyewear for fishing is polarization. Polarized lenses make it possible to see under the surface of the water because the lenses are specially made to cut down refracted light. Once the sunlight bouncing off the water is minimized, it’s far easier to see into the water and read important fishing features like vegetation, depth, underwater landscape, and even fish! Other water and winter sports can benefit from polarization as well to prevent the eyes from glaring sunlight.

Make sure that you’re prepared for your sport with protective gear and the right eyewear to keep your eyes on the prize. See an eye care professional to give your eyes a sporting chance!

Eye Floaters, Flashers, and Spots

Eye doctors often get asked about small specs that appear to float through someone’s field of vision. Even very young people may notice on occasion a spot that appears when they look at a light, plain surface. The good news is that there is no reason to be alarmed!

Eye floaters are simply how we see differences in the gel or liquid in the back of our eyes. Typically these spots appear as specks, circles, or stringy webs that drift through our field of vision. The reason that we see them is that the human brain works with the eyes to interpret light that enters through the front of the eye. In between the light entering the front of the eye and the structures inside the eye that create visual images there is a gel-like substance called vitreous or vitreous humor.

Vitreous is generally a thicker gel in young people and begins to change as we age. Through our youth, the gel generally remains consistent. With age, vitreous dissolves and starts to turn into a thinner liquid. Because some of the gel does not thin and remains in a gel state, you may be able to see small discrepancies in the consistency of the material. These are floaters.

Floaters like this are not anything to worry about, but other types of visual anomalies have different causes and may be something more serious. If you see an occasional floater, there’s no need to see the doctor. If you suddenly see lots of floaters, or if you are seeing flashes of light, contact your eye doctor right away. Sudden appearance of many floaters could mean that the vitreous is beginning to separate from your retina. This is a type of detachment and can lead to damage to the delicate retina which may cause permanent loss of vision.

Always keep in mind that any sudden changes to your vision could be serious and should be addressed with a medical professional right away.

What Causes Red Eyes in Photos

Digital photo retouching may be almost as popular as selfies are, but that doesn’t mean that it’s always easy to remove distracting red eye effects from photos. Why does that happen anyway? The explanation is simple, and so is avoiding the problem.

What is Red Eye?
Red eye is the term used to describe the bright red or orange-ish spots that can be see on people’s eyes in photos. Red eye is caused by light reflecting off the retina at the back of your eyes. Generally, it happens in low light conditions when a flash is used. The bright light flashes so quickly that eyes don’t have time to respond and restrict the pupil so that less light enters the eye. This light travels through the front of the eye, but is reflected at the back of the eye because the retina has a strong blood supply. There is a layer of connective tissue called the choroid that nourishes this part of your eye, and also gives it a red color. This is why “red eye” happens.

How to Prevent Red Eye in Photos
The easiest way to prevent red eye in photos is to not use a flash. If there is enough light in the area so that your pictures turn out clear without a flash, turn it off. You may have better luck if you steady the camera as a shot without a flash usually takes a little longer to gather light, and may turn out blurry if you are not steady.

Of course, if you cannot turn off the flash because the area is too dark, tell people to look just slightly away from the camera. As long as the angle is pointed somewhat away from the camera lens, there should be no flash.

If possible, make your room brighter to get clearer photos. This can help pupils reduce size somewhat and lessen the likelihood that you’ll see a red eye reflection in the photo.

Many cameras also have built-in anti-red eye functions that you may be able to switch on for specific lighting situations that otherwise would cause trouble.

How to Fix Red Eye
Fixing red-eye problems is usually pretty easy. If you’re using a digital camera, some of them can correct the problem digitally with a red eye function in the menu, if not avoid it altogether. Pictures taken on smartphones can be corrected with any number of photo editing apps. If you’ve had photos printed and red eye is present, check out some of the photo kiosks available at many stores that develop and print photos. You can usually scan the photo, remove the problem, and print it quickly and easily.

How to Clean Your Eyeglasses

If eye care professionals cringe when they see you clean your glasses, and your lenses don’t last long before they are scratched, then it’s probably time to update your eyeglass cleaning habits!

To make sure your lenses stay clear and crisp as long as possible, follow these lens cleaning instructions.

1. First, wash your hands and dry them thoroughly. Don’t use a soap that contains lotion. Regular hand soap or dish soap are preferred. Dry your hands with a lint-free towel.
2. Rinse your glasses under the water. Use lukewarm tap water with a gentle stream. Avoid using water that is too hot.
3. Put one drop of dish soap on each lens, or drop some on your fingers and apply it to the lens this way. It doesn’t take much, but remember not to use a soap with lotion.
4. Gently rub the front and back of the lens, as well as rubbing lightly along the frame. Be sure to wash along the frame components like nosepads and hinges. Dust and oil can accumulate around the lens, so clean these areas thoroughly.
5. Rinse the glasses with lukewarm water inside and out.
6. Carefully shake or tap the glasses to remove excess water.
7. Use a clean, lint-free towel to dry your lenses and frames. A cotton towel is preferred, but most dish towels are fine as long as they have been washed without substances that can smear your lenses, like fabric softener or dryer sheets. Make sure it is a fresh, clean towel!
8. Check to see that your eyewear is free from smears and smudges. Keep a microfiber cloth on hand to clean any minor residue you may encounter.

Even when using eyeglass cleaning products, it’s important to inspect your lenses and follow instructions. If you like to clean your glasses without a faucet, there are several cleaning sprays available in drugstores or at our practice. Before using a cleaning wipe, make sure to blow any debris off of your lenses to prevent scratching.

The best way to avoid not only scratching your glasses, but also having to clean them frequently is by getting an anti-reflective (AR) treatment done on your lenses. The best AR treatments prevent scratching, reduce glares, and even resist dust, dirt, and oil.

Talk to us if you have any questions about proper care for your glasses!

Don’t Forget UV Protection this Winter

Most people think of sunglasses as summer gear, but in some ways it’s even more important to wear sunglasses in certain winter conditions than in the warm summer months.

Thanks to public awareness campaigns about the risks of skin cancer, more people are aware that UV rays and intense sunlight are bad for our skin. Sunblock, clothing, and shade are regularly used to protect us. Do you know that UV rays are damaging to our eyes, too?

Prolonged UV exposure raises risks for:
• Cataracts
• Macular Degeneration
• Pingueculae
• Pterygia
• Photokeratitis

In the warmer months, we think about protection from the sun because we expose so much skin and can experience sunburns when we’re not covered. In the winter, however, people are colder, and bundled up, so they don’t think of the sun as a risk. This is a problem because snow can reflect 80% of UV rays! That means you’re experiencing normal sunlight from being outside, and harsh glares from white surfaces.

The fatiguing effects of winter glares become apparent usually when doing outdoor activities like skiing, snowboarding, or sledding, but driving in bright wintry conditions can also be damaging and dangerous. It’s important to be protected year-round!

When looking for appropriate winter sunwear, remember:

• Good sunglasses offer UV protection, so always be sure to check that they block 100% UVA/UVB rays.
• Larger glasses are in style, which is great because the bigger lens protects more of your eyes and the skin around your eyes from UV damage. Look for a large lens and wraparound style.
• Don’t worry about the color or darkness of the lens. Those things can vary while still providing adequate UV protection. Check the label for that information, or speak to an optician.
• Remember, polarization is for more than fishermen! Especially in the winter months when ice and snow can cause harsh glares, polarization can be a big help.
• Specialty eyewear exists for all of your favorite winter sports. Be sure your eyes are protected from the sun and safe during sports.

Talk to us if you have any questions about your UV exposure or any specialty eyewear you need to live your active winter lifestyle!

The Pros of Progressive Lenses

Multifocal lenses have made everyday life much easier for people over forty. Bifocals were invented sometime in the 1700s, but trifocals and eventually progressive lenses were later created to give wearers even more functionality. The options are great, but making the choice can be difficult!

If you need multifocal lenses to provide you more than one power, progressive lenses may be a perfect fit. They have many benefits and can work in almost any setting.

Here are some things to consider for your progressive lenses.

How Progressive Lenses Work
Progressive lenses are called “progressive” because they gradually change from one magnification to a stronger one at the bottom of the lens. They progress from a distance vision prescription to an intermediate and then a near-field one. This means that the wearer can look up to the horizon in the upper portion of the lens and see distances clearly, use the middle of the lens to look around their intermediate space, and view reading materials and close up objects through the bottom of the lens. This use of progressive lenses becomes second nature after some adjustment.

Are Progressive Lenses Better than Bifocals?
Many people prefer progressive lenses over bifocals for two reasons. First, bifocals only have two prescription powers. They usually address a farther distance and a close-up reading view. Either an intermediate distance or a certain distance will not be completely clear. Second, some people are distracted by the “image jump” that they see when looking through bifocals. This is caused by the abrupt line where the inset meets the rest of the lens. Some people love bifocals and see no added benefits from progressive lenses, but most people like the versatility of progressive lenses.

Additional Benefits of Modern Progressive Lenses
Multifocal lenses that are not progressive sometimes don’t fit well within a certain frame size. Because lenses have to be cut to fit the frame, the reading portion can end up too big or too small compared to the lens size. Short corridor progressive lenses address this by scaling the reading zones into a more compact area. This means wearers still have their pick of frames and eyeglass shapes.

In addition, specialty progressive eyewear exists to meet certain needs. Computer eyewear can be a great option for people who work at a desktop setting. These lenses do not need the addition of a distance vision section. This means that they allow more room for a close distance focus, and then the rest of the lens is created for the intermediate field. With a computer screen sitting at arm’s length, reading materials up close, and walls at an intermediate distance, these lenses help maximize the eyewear for indoor occupational settings.

Nobody will notice! Some people believe there is a stigma with bifocals because they perceive them as glasses only for senior citizens. Many people even put off getting multifocal lenses because they don’t want to admit that they need them. Progressive lenses help this issue for some people because there is not a visible line like with bifocals. It is unusual for someone to notice that the wearer has progressive lenses unlike the ability to see bifocal lines.

If you have any questions about how progressive lenses can help your eyes see as clearly and comfortably as possible, speak with an optician. There are many options and we can help you narrow down the possibilities so you can make an informed decision.

Using Oils to Relieve Dry Eye

Many medical professionals are aware of the benefits of adding healthy oils to our diets. Most of the fats that are essential for a healthy heart, skin, brain, and other systems come from things like fish, nuts, seeds, and vegetables. Doctors will sometimes prescribe fish oil or flaxseed oil to help improve someone’s health, but we are learning more and more about how these beneficial oils can help more than previously thought. In the case of your eyes, certain oils may treat of dry eye.

Vision Benefits of Flaxseed and Fish Oil
Fish oil and flaxseed oil are beneficial because of the omega-3 fatty acids they include. These materials are needed to support optimal health. Flaxseed oil contains high levels of alpha-linolenic acid (ALA), an omega-3 fatty acid. ALA is converted into two different omega-3 fatty acids during digestion. These acids are called EPA and DHA and they protect cell membranes all over the body.

By adding flaxseed oil or fish oil to your diet, you may be protecting against dry eyes. These items appear to reduce dry eye symptoms, and can be used with or without eye drops to alleviate some aspects of dry eyes. Many eye doctors are recommending fish oil or flaxseed oil as part of an overall plan to treat dry eyes, or to prevent the onset or progression of symptoms.

Symptoms of dry eyes include:

• Chronic dryness
• Burning
• Stinging
• Redness
• Eye fatigue
• Sore eyes
• Light sensitivity
• Blurred vision

How to Start Taking Flaxseed and Fish Oil
If you’re looking for how to get these substances into your diet, keep in mind that many kinds of fish are high in these oils. Look for things like salmon, sardines, tilapia, and shrimp. For people who don’t like fish, or want other options, fish oil supplements are usually pretty inexpensive and easy to come by. You may ask a pharmacist for suggestions on which over the counter versions are best.

The downside of fish oil is that sometimes people will get a fishy aftertaste from the supplements. A great alternative is flaxseed oil. These supplements are readily available as well, and will provide similar benefits. Just be sure to find a brand that is cold pressed and remember to keep it refrigerated for freshness and optimal nutrient content (benefits of flaxseed oil are reduced by exposure to oxygen, light, and higher temperatures).

Flaxseed oil can get a little pricy, but you can buy flaxseeds and grind them in a coffee grinder before adding them to your diet. Use them immediately to get the full benefits!

Other Benefits
These fatty acids may help reduce your risk for several other health problems. The benefits include:
• Reduced risk of macular degeneration
• Reduced risk of cataracts
• Increased cardiovascular function
• Lower risk of heart disease
• Help maintain healthy weight