Glare From Eyeglass Lenses?

Ever noticed glare or reflection from someone's eyeglass lens? The person wearing these glasses and lenses may not realize it, but 8% of light that hits a person's glasses induces annoying reflections and glare. This reflection and glare causes not only vision disturbance but also reduction in the person's vision.

Today there are special coatings that can be been applied to eyeglass lenses that virtually eliminate all reflection and glare. This is especially important with indoor lighting, streetlights, headlights, television and computer screens. With computer vision syndrome being so prominent and common, the need to eliminate glare on lenses is essential for eyewear when it comes to looking at a computer screen all day.

The type of coating that is applied to eyeglasses to stop the reflection and glare is something that is referred to as A/R, anti-reflection or antireflective coatings. The Anti-Reflection coating is applied to the surface of lenses and other optical devices. The anti-reflective coating consists of a transparent thin film which contrasts the refractive index. The thin film layer helps change the wavelength and incident angle of the incoming light.

The Anti-Reflective coating and interference based coatings were invented by Alexander Smakula in 1935. Alexander Smakula was working for the Carl Zeiss optics company at the time. The German military actually used the Anti-reflection coatings as a military secret during World War II. It wasn't until 1930 though that Katharine Burr Blodgett and Irving Langmuir developed the organic anti-reflection coatings.

This improves the efficiency of the eyeglass lenses since less of the incoming light is lost. The reduction of the glare and reflections helps improve the contrast of the image one is looking at. By adding the A/R coating one can reduce the stray light in the lenses.

When one applies the coating to a new pair of eyeglasses, this helps enhance eye contact. Another benefit to the anti-glare treatment is the fact it enhances the appearance of your eyewear. Besides the benefits of the anti-glare coating, most A/R coatings include additional coatings that repel water and grease. This makes the lenses very easy to keep clean. The A/R coatings are usually suited towards higher-indexed lenses as they tend to reflect more light. It usually is cheaper to coat higher indexed lenses than that of low index glasses.

The thin film anti-reflective coatings help to greatly reduce the loss of light in the many elements of the lenses. The quarter-wavelength of coating can eliminate all reflection in the eyeglass lens.

Dr. Ruth Tang is the owner of Irvine Optometry in Orange County, California.

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Exactly What Options Are Available For Glasses?

Buying a new pair of eye glasses should be an exciting thing to do; with a brand new pair of frames and a brand new prescription, you can feel empowered when it comes to your looks and see more clearly. The process may be intimidating, though, when it comes to weighing the extensive amount of updated varieties now accessible for glasses.

A qualified optical specialist can help you in selecting the sorts could be the best for your sight problems and life style, but it helps to know about the type of options you can purchase.

Getting the Best Lenses

Once you've decided on the best eyeglass frame, the next phase is getting lenses. There is a huge selection of lens sorts for your choosing at an optical center, which includes:

1. Polycarbonate Lenses,
2. Polarized Lenses,
3. Photochromic/Transition Lenses, and
4. Hi-Index Lenses

When weighing what kind of lens you will want to use, it is helpful to imagine your day-to-day activities. Are you out-of-doors a large percentage of of the time or inside in front of a computer? Do you play sports or participate in additional physical things very often? Some other factors to consider may include the strength and the weakness of your prescription.

Here's a short breakdown of the lenses at hand.

Polycarbonate Lenses: This lens consists of a kind of plastic that is designed to become lightweight and impact-resistant, just the right combination for the really active sort of.

Polarized Lenses: For the out-of-doors lover, this lens helps lower glare and provides high contrast vision, not to mention 100 percent UV protection. Polarized lenses are most frequently utilized in sunglasses, but they could even be used for inside wear for people who are sensitive to brightness.

Photochromic/Transition Lenses: If your time is usually shared between indoor and outdoor time, this might possibly be the lens for you. These lenses systematically darken in response to outside UV light, also protecting your eyes from the sun. One disadvantage is that the lenses will not darken as much if you're in a car, simply because the windshield keeps a great deal of the sun's UV light from contacting the lenses and initiating the darkening.

Hi-Index Lenses: For the ones with especially unfavorable vision who previously were relegated to heavy, thick lenses, this is a beneficial lens to give some thought to. Hi-Index lenses are tailored with a particular plastic that reflects light differently; with this lens, vision can be corrected with a lesser amount of material, hence less substantial lenses even for stronger prescriptions. The supplies for the lenses tend to be more expensive, but provide more comfy, fashionable eye glasses.

Choices For Prescription Lens Coverings

When you are weighing what lens is effective for you, in addition consider some features at hand to add to the lenses. Different coatings yield several different results. An optical center location is likely to have several choices. Here are a few of the selections that may be possible:

Anti-Reflective Coating: This option can be of assistance to lessen the internal and external reflections in your lenses. This additive can boost contract and visual perception all the while keeping down glare during the day and at night.

Hydrophobic Coating: If you normally are in wet, messy conditions, this variety of coating can be greatly helpful. A hydrophobic coating assists in maintaining prescription lenses clearer in those instances and provides a water-resistant surface on the lenses.

There are a great deal of possibilities for your glasses at a Dallas Optical Center. To get help deciding on which attributes are best for your glasses and sight specifications, visit the experts at Carter Eye Center.

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Deciding Whether to Get Laser Eye Treatment or Contact Lenses

The allure of laser eye treatments is to rid you of eyeglasses. Wearing contact lenses is also another means to experience this kind of freedom.

So the final challenge would be: what should I prefer - wearing contact lenses or undergoing laser eye treatment?

There are advantages and disadvantages to both forms of vision correction.

For those who always receive constantly changing prescriptions, refractive surgery is not appropriate for them. This is because the sight may likely alter soon after the procedure, resulting to using glasses, contact lens, or more surgeries to experience clearer eyesight. Disposable lenses can be purchased in small quantities (e.g. 3 months at a time) and the prescription can be updated before each purchase.

If your Rx is very high, laser eye operation will not be able to altogether rectify your sight. Disposable contact lenses get limitations as well, but these restrictions can correct a wider scope of prescriptions. Conventional (or yearly) contact lenses can be specially made to suit even higher prescriptions.

If you have an uneven shaped cornea (the front of the eye), eye surgeries cannot be performed to rectify this. This is generally the case with injury to the eyes or eye diseases affecting the cornea. To right this, RGP (ripid gas permeable or hard) contact lenses are used. Due to the rigid form of the material, the contact lens vaults over the irregular cornea, effectively creating a new, smooth front surface. This in turn gives greater optical clarity compared to soft contact lens.

Although the above three points seem to imply the superiority of contact lenses, there are disadvantages to as well. The disadvantages are specialties where laser eye treatment excels in.

Contact lenses demand habitual upkeep. This means that never-ending insertion, removal, cleaning, and maintaining it can be a trouble. In comparison to laser eye operation, once the eye is recovered, no additional care is required.

Contact lens wear requires the placement of a comparatively big foreign body into the eye. These plastic pieces are often in eyes for long hours. Due to the nature of contact lens wear, you are at a greater risk of eye infections. The risk becomes especially higher if one sleeps while wearing it or fails to properly maintain them. Compared to eye surgery, once the eye is recovered, no maintenance is essential.

A lot of folks need and want the freedom from wearing spectacles, especially for certain activities like playing sports. Rough sports like kickboxing rugby and even swimming can easily dislodge contact lenses. Not only can these sports reposition the lenses, wearing them while doing these activities can also cause them to pop out. Naturally, this will no longer be an issue after having laser eye treatment.

Comparing contact lenses versus laser eye treatment will result to many advantages and disadvantages within the two. The best way to answer this question to find out whether which one is more appropriate for you, set up an appointment with the local optometrist as they are the ones qualified to give professional ideas.

Find out more about Laser Eye Treatment HQ - your source of the latest news and technologies on laser eye treatment, eye surgery, and more.

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The Dangers of Driving Without Wearing Polarized Sunglass Lenses

Who would have imagined that stepping into a car without polarized lenses could be dangerous?

These dangers are real due to the amount of glare refracted off a horizontal surface like a road, or snow covered road, and it's significantly higher than an ordinary situation. Additionally a car's interior, including the dashboard, can reflect light worsening the light sources while driving.

Continual driving in glary conditions can cause eye fatigue leading to driver drowsiness; this is a highly documented contributing factor in car accidents and fatalities. Late afternoon sun, moments of intense glare, and driving close to water surfaces can all cause moments of blinding that effects driver safety. Glare from the sun has been quoted as a key reason for car crashes worldwide. The basic step of wearing polarized sunglass lenses is a practical approach.

Driver Reaction Times

"Reaction times for drivers wearing polarized sunglasses are up to 20% quicker compared to driving without any sunglasses and up to 40% quicker than with ordinary sunglasses. Faster reactions mean that stopping distances are shorter - by up to 6 metres - compared to driving with non-polarized sunglasses, and as much as 3 metres shorter than driving without sunglasses." Results from a Polaroid study found. (Test results available at polaroideyewear.com)

So what are polarized lenses?

Basically, a polarized lens has a specialized coating that is typically injected into the middle of the lens that is polarized vertically. Visible light waves come from all directions and when this fragmented light connects with a horizontal lens plane, high levels of glare occur. A polarized lens reflects the light off the surface of the sunglass lenses, blocking the fragments of light entering the eyes and reducing the overall glare. This greatly reduces harmful UV light allowing the human eye to see contrast and images with much greater clarity than a regular lens as can be seen below.

Given the many benefits of polarized sunglasses it's no wonder they've become a key competitive edge for sports sunglasses. Companies such as Oakley, Rudy Project and Arnette provide a huge range of polarized lenses for their sports sunglass range. Once you're accustomed to wearing sunglasses when driving or outdoors it can become uncomfortable and dangerous to be driving or playing sports without the usual UV protection that your eyes get used to. The answer is to have multiple pairs of good quality sunglasses on hand for every situation. To buy sunglasses online is an easy and usually cost effective way to ensure you have enough pairs of sunglasses for all your daily activities.

The Sunglass Fix are passionate about sunglasses. We want you to get the best out of your sunglasses and offer some of the best after market replacement lenses, or your money back. We want you to continue to enjoy wearing you're favourite sunglasses through scratch free lenses for optimal heath and safety. Visit us today at http://www.thesunglassfix.com/

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Taking Care Of Your Sunglasses

Having a good pair of sunglasses is important to keep your eyes safe from UV rays. Constant squinting damages vision and can even have long term effects. Children and adults should always wear sunglasses when outdoors in sunny weather. But sunglasses can become scratched or otherwise damaged if not taken care of properly. Whether your sunglasses are prescription or non-prescription, or you wear them simply for the look, keeping your shades in good condition ensures they will last longer. Below are a few tips on how to properly take care of your sunglasses in order to get the most use out of them.

Clean your sunglasses often. Just about any place that sell sunglasses will give you a complimentary lens cleaning wipe or even glass cleaner when you purchase sunglasses. Keep these around with you at all times and clean your sunglasses often. If you have an empty bottle of lens cleaner, put Windex in it. This often works much better than the stuff they give you at the store. Make sure the wipe is always clean, as any residue may leave a film on your lenses.

To wash your sunglasses, just rinse them under warm tap water with a little liquid soap, and dry them with the wipe. Never use a sponge on your sunglasses as this will cause scratches.

When you're not wearing your sunglasses, always keep them in a protective case. Some stores will give you a complimentary case when you purchase sunglasses, or you can get them at an optical shop or any store that sells sunglasses. Keep your shades in the case with your cleaning cloth.

If you notice any damage on your sunglasses, such as a loose screw, have them checked at an optical store. They may be able to fix it for you free of charge, or for a very small fee. You may also be able to fix them yourself with a small screw.

If you're wearing your sunglasses while you're sweating, remove them often and wipe the sweat from around the entire frame. The acid in the sweat and the oils from the perspiration can damage the frames and the coating on the lenses.

Don't leave your sunglasses laying outdoors for long periods of time, such as on the dashboard of you car. Similar to sweat and perspiration, the heat can also damage the lenses and can cause the frames to become rusty.

Wholesale sunglasses are much cheaper than in boutiques or opticians. Keep a pair in your car, in your office and at home, split the cost with a friend, or buy a bunch and give them out as gifts during the holidays.

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Eye Care For Adults

Are you having eye problems? How are your allergies? Is your eyesight just not what it used to be? Maybe you should be seeing an eye doctor. Eye doctors are there especially for adults to make sure you are in the best possible shape at all times, or to catch a problem before it begins.

Eye care is very important to keep up on as the years go by. Adults are much more susceptible to problems that can quickly spiral into bigger issues for them. This is why routine maintenance check-ups are a good idea. At a check-up, a doctor will test your vision and analyze the results to see whether or not you need glasses. They will also check for other problems such as astigmatism, infections, viruses and other diseases. The testing usually goes for about 30 minutes including test result discussion.

If you need prescription medication or glasses you can be prescribed right on the spot. You will be fitted for frames and explained how the process works and then your lenses and frames will be sent away for. You can either pick them up at your doctor's office or it can be delivered straight to your house.

Have you ever felt like you have problems such as air behind your eye, itchy red or burning eyes, glassy eyes or anything other of the sort? Depending on the area you live in, air goes through cycles of being full of pollen, or just being poor quality. This makes people feel like they are having some sort of disease or infection when it could just be the air quality/ It is always safer to go see the doctor if you are having problems like that then to try and diagnose yourself to be safe but many people do have these same harmless problems.

The doctor can give you eye drops that will ease the pain, swelling and the itchiness but also they will help you to feel better by ensuring you that you are going to be OK rather than worrying. You can also stop problems in their tracks before they get worse. Things like glaucoma can blind you when untreated. Things like this are necessary to be checked upon as an adult to make sure you don't have it. It is a common disease that is genetic. If you have any family members with glaucoma you should have your eyes checked to make sure you are in good shape. Once it goes too far you could be stuck.

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Choose Eyeglasses for Children

For young small children, contact lenses simply aren't a choice when vision correction is needed. Contact lenses can typically be regarded as viable once the child hits the teen years, but until then, eyeglasses would be the most effective selection. Luckily, eyeglasses have changed radically in recent years.

Your son or daughter will have several decisions to make when selecting their eyeglasses. There are numerous types of eyeglass frame designs as well as colors and designer brands. Most kids will likely recognize most of the designer brands that have brightly colored frames and names such as Converse and Mary-Kate and Ashley. Older youngsters may possibly want the same designer styles their mothers and fathers wear including Lucky and Daisy Fuentes.

From a parent's perspective, we realize that you would like to ensure that your kid's eyeglasses are both useful and sturdy. There is a wide selection of kid's eyeglasses that should satisfy your child's need to get a cool pair of eyeglasses. What's even better is that it can be equally friendly for your pocketbook.

Whenever you are selecting kid's eyeglasses, there are some components to keep top of mind to be sure the frames will last:

1. Look for spring hinges. These hinges make the eyeglasses additionally sturdy and significantly less probable to break when the eyeglass arms are opened too far.
2. Ask for polycarbonate lenses. These lenses are less probable to crack or break and are safer for your kid to wear.
3. For your little one who you understand will be tough on eyeglasses, have a look at stronger frames manufactured of lightweight metal or titanium.
4. Inquire about scratch resistant coatings. This is a particular coating that can be added to polycarbonate lenses to lower the scratches.

All of these options will support your desire to extend the life of your kid's eyeglasses and eyeglass frames. Warranties are another excellent option for children and generally will cover breakage as well as add additional coatings such as scratch resistance.

Whenever you stop by your eye doctor for an eye examination and kid's eyeglasses, make the trip pleasurable for your child. Make it easy for your youngster to try on and model numerous pairs of eyeglasses until she is pleased with those she's going to be wearing on a daily basis. For kids who are reluctant to wear glasses, encourage them to pick out a pair that matches their personality and to think of them as a fashion accessory for their eyes.

Learn more about kid's eyeglasses and how to choose eyeglass frames.

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