Eyeglasses Frequently Asked Questions at Pro Optical Boston, your Boston Eye Doctors


	Frequently Asked Questions

	FAQ's

Eyeglasses

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Why do some frames cause a reaction on my skin?

If metal frames cause a reaction, nickel's usually the culprit. Most metal frames are made of a nickel alloy. Other metals used include aluminum, stainless steel, titanium, zinc, copper, beryllium, gold and silver. Stainless, titanium, gold and silver are usually hypoallergenic.

Some people can also be allergic to the nose pads on metal frames. Most are made of silicone or acetate, but they can also be made out of polyvinyl chloride (PVC), nickel, titanium or rubber. Silicone is tricky. Certain silicones are hypoallergenic (such as medical silicone), but others can trigger allergic reactions. Both PVC and titanium are usually hypoallergenic. Most plastic eyeglass frames are made of zyl (also called zylonite, acetate and cellulose acetate) or propionate. Other materials used in plastic frames include: polyamide, nylon, polycarbonate, carbon and Optyl (a brand of epoxy resin). Propionate, polyamide, nylon and Optyl frames are all considered hypoallergenic.

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I see fine, why do I need to see an Eye Doctor?

Regular eye exams are the only way to catch "silent" diseases such as diabetes, glaucoma and other conditions in their early stages, when they're more easily managed or treated. Many conditions can be discovered in a carefully planned eye exam. Those who consider mass-produced, over the counter reading glasses are truly doing themselves a disservice, both financially, and medically.

One-size-fits-all reading glasses not only do not work well for most people who have a different prescription in each eye, and/or astigmatism, or whose lens and frame parameters are not measured correctly, they bypass the opportunity to have their eyes checked for early detection of many manageable diseases or conditions. For those insisting on selecting glasses not measured specifically for there eyes, headaches and eye fatigue are common symptoms.

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How can I stop glare at night or at a computer?

There can be many causes for this condition. However, many times this problem can be alleviated, or even dismissed, with the use of "AR" (Anti Reflective) Lenses. First and foremost, however, annual, or semi annual eye exams are the ONLY avenue to your eye health, and the ONLY resource to ascertain the correct reason or cause for any eye ailment! That being said, and once any medical or physical condition is removed as a possibility of cause, then the perfect solution for glare on computer screens, or glare from night driving would be AR (Anti Reflective) Lenses.

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Are the lenses that change colors OK for sunglasses?

A popular lens in plastics are called Transitions^® Lenses. When they're exposed to ultraviolet light, they become darker or change to a different color. However most brands are not as effective in a car or in any vehicle with the "blue or gray Stripe" on a windshield. Because of the ultraviolet blocking nature of the windshields, lenses will remain pretty light when you're driving. The ultimate sunglass experience can be enjoyed with "Polorized" lenses as these lenses offer the most protection and comfort to the eye so strain and fatigue can become a thing of the past. Transitions is a registered trademark of Transitions Optical, Inc

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Why are my lenses so thick?

Your prescription, your personal measurements, and the size of your frame are the three key factors that will determine final lens thickness. If you are farsighted your lenses will be thicker at their center, in contrast, if you are nearsighted your lenses will be thicker at their edges. New innovative technology in lens designs, and materials, have allowed us to reduce overall lens thickness by as much as 60% in many cases. Our staff will guide you toward the best possible results in helping you choose the best frame-lens combination for your ocular and fashion needs.

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Can I use no-line bifocals with fashionably smaller frames?

Yes. Progressive lenses will allow you to use smaller frames while maintaining terrific vision at all distances. The visual channel that progresses from distance vision to near vision is wider, and more accurate for that 'Tween' vision necessary for clarity in the area too far for close, and too close for far. It is a wonderful lens for desktop and computer use as well. Please note, that in a few of the especially small frames, not all frames can be a successful candidate for a progressive lens. With this in mind, our opticians will help you with a proper fit.

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Do regular glasses protect my eyes from the sun?

Plastic lenses do not protect your eyes. You need to have UV protection from UV rays, which are not inherent in a plastic lens. You can have a UV protective coating applied to a plastic lens, and polycarbonate lenses have built-in UV protection. Glass lenses protect your eyes from harmful UVB rays but not from UVA. Some experts think UVA rays might have long-term, damaging effects to your eyes and skin.

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What is Ultraviolet (UV) and Infrared (IR) light?

The light we see with our eyes is really a very small portion of what is called the "Electromagnetic Spectrum." The Electromagnetic Spectrum includes all types of radiation - from the X-rays used at hospitals, to radio waves used for communication, and even the microwaves you cook food with.

Radiation in the Electromagnetic Spectrum is often categorized by wavelength. Short wavelength radiation is of the highest energy and can be very dangerous - Gamma, X-rays and ultraviolet are examples of short wavelength radiation. Longer wavelength radiation is of lower energy and is usually less harmful - examples include radio, microwaves and infrared. A rainbow shows the optical (visible) part of the Electromagnetic Spectrum and infrared (if you could see it) would be located just beyond the red side of the rainbow.

Ultraviolet light (UV) is an invisible light that is part of the sun's radiant spectrum. Exposure to ultraviolet light can cause the lenses of the eye to become cloudy, causing cataracts among many other conditions. Ultraviolet light causes the eye to age faster, thus can also cause macular degeneration. You can't see ultraviolet light. It affects the eye without your awareness to its being there, and the effects are cumulative. Almost everything in nature is affected by UV light, and almost everything deteriorates because of it. Not all sunglass lenses block all of the UV light, but the lens we recommend most is a polarized sunglass lens for sunglasses and polycarbonate lenses for dress wear.

Infrared (IR) is an invisible electromagnetic radiation that has a longer wavelength than visible light and is detected most often by its heating effect. Part of the discomfort you feel in your eyes after being out in the sun for a while is caused by IR light. Not all sunglass lenses block all of the UV light, but the lens we recommend most is a polarized sunglass lens for sunglasses and polycarbonate lenses for dress wear. Although infrared radiation is not visible, humans can sense it - as heat. Put your hand next to a hot oven if you want to experience infrared radiation "first-hand!

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Do I need an Optometrist and or an Ophthalmologist?

Both are eye doctors that diagnose and treat many of the same eye conditions. The American Optometric Association defines Doctors of Optometry as: primary health care professionals who examine, diagnose, treat and manage diseases and disorders of the visual system, the eye and associated structures as well as diagnose related systemic conditions. They prescribe glasses, contact lenses, low vision rehabilitation, vision therapy and medications as well as perform certain surgical procedures.

The main difference between the two, is that ophthalmologists perform surgery, where an optometrist would not, preferring to specialize in eye examinations, as well as eyeglass and contact lens related services.

Optometrists would be involved in all of the pre- and post-operative care of these patients; collecting accurate data, educating the patient, and insuring proper healing after the procedure. An ophthalmologist is more of a medical related specialist, who would need only to be involved if some kind of surgery were being considered. An optometrist can treat many eye condition if needed. This may include the treatment of eye infections, allergic eye conditions and others, to name just a few.

A third "O" that often is overlooked, is the optician. An optician is not a doctor, and they cannot examine your eye under their own license. However, a highly trained optician plays an indispensable role in the most successful eye doctors' offices. An optician most often handles the optical and glasses side of things. Based on their vast knowledge of lenses, lens technology and frames, they manufacture eyeglasses, as well as assist in the selection of eyewear, based on the requirements of each individual patient.

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