Normal eyewear often creates glare, reflections, and "ghost images." Now all that can be eliminated with anti-reflective lenses.

What we see is a result of light being sensed by our eyes. With normal glasses, much of the light reflects off the lenses which produces glare and reduces the wearer's visual acuity. This light reflection is both a cosmetic and visual problem.

Anti-reflective lenses increase light transmission through the lenses up to 99.5 percent. They make it easier to see and easier for others to see you. They are often recommended by your eye doctor for those viewing computer screens and driving at night.

If you have hard resin lenses (CR-39), you should consider getting a scratch resistant coating. Resins and plastics are more susceptible to scratches than glass. Scratches damage the cosmetic look of the lenses and compromise their performance. With a scratch resistant coating, you do not have to worry as much about minor scratches on your lenses.

Another advantage of scratch resistant coatings is that most coatings come with a one-year warranty. They are a great investment to prevent minor scratches. However, it is important to remember that scratch resistant does not mean scratch-proof. All lenses are susceptible to scratches.

Previous to the last few years, the only materials available for use as lenses were glass and a hard resin called CR-39. But recently, high index lenses have become available. High index materials are named because they have a higher index of light refraction. Basically, they can do the same job that glass or CR-39 does, but high index lenses are much thinner and lighter. With high index lenses, you can avoid having “coke bottle” lenses.

Polycarbonate: The first and still the most popular high index plastic is polycarbonate. Polycarbonate was originally developed for fighter jet cockpits. It is very strong, very light, and resistant to scratches and breaking. Most sports lenses are made of polycarbonate. For higher power prescriptions, however, polycarbonate lenses may still be too thick and a higher index of refraction might be recommended based on the prescription your eye doctor has written you.

For many people, different lenses are needed for seeing at different distances. Bifocal lenses allow the wearer to look through two areas of the lens. One area focuses on distant objects, while the other is used for reading. Most of the time the "reading" area is smaller, shaped like a sideways "D", and found in the lower half of the lens. These bifocals are called line bifocals or flat-tops. If you are focusing on distant objects, you look through the top half of the lenses. To read a book, magazine, or newspaper, you look through the "reading" area. One thing that is difficult about using bifocals is dealing with the line between the two vision areas. Fortunately, recent technologies have developed a new type of lens, called the "no-line", or progressive, lens.

Bifocals allow the wearer to read through one area of the lens, and to focus on distant objects through another area of the lens. As the eyes age, though, a stronger prescription is often needed to read. This would be fine, but the stronger prescription that allows for reading makes it difficult to focus on objects at intermediate distances, such as grocery items on a shelf or your speedometer. Thus, trifocals are necessary for a third prescription for intermediate focusing.

Trifocals, also known as line trifocals, feature three areas of focusing power, each separated from the other by a distinct line. The three windows allow for focusing on distant objects, intermediately distanced objects, and for reading. The downside of trifocals is dealing with the lines between the different focusing powers. Fortunately, recent advances in technology have led to developments in no-line, or progressive lenses.

One of the main problems with bifocal and trifocal lenses is the problem of eye fatigue. It is difficult to switch from one focusing power to another. It can make your eyes tired, and it can even lead to a headache, sore neck and sore back.

A recent variation of bifocals and trifocals is the no-line lens or progressive lens. No-lines provide a smooth transition from focusing on nearby to focusing on distant objects because they do not have a distinct line which separates the focusing powers. Instead, a gradual change in power allows the wearer to focus on objects at all distances. Distant objects are viewed through the upper portion of the lens, while near objects are viewed through the middle or lower portion of the lens. These are also great for computer users.

Protecting your eyes from the sun is just as important as protecting our skin. As eye care professionals, we often recommend to all our patients to wear sunglasses with UV protection any time you are outdoors. Ultraviolet (UV) coating, like sunscreen, is a necessary coating for all glasses that will be used outdoors as UV has been linked to serious eye diseases including cataracts.

With all sunglasses, the tint options are endless and can vary according to your liking. It is important to note that tint colors will vary from lens material to the thickness of the prescription. So your prescription may turn out slightly differently than the demo lenses shown in our clinic. CR-39 lenses (or plastic lenses) will absorb tints better, but polycarbonate does come pre-tinted in both gray #4 and brown #4 for darkest available tints no matter what the prescription. Trivex will not tint as dark if that is what you are going for.

Gray and Brown/Amber tints are available in grades from 1 to 4 where 1 is almost clear and 4 is a true sunglass lens. Other color tints are available in a 3 level as a standard. If you want a different level, it is available by special request. Other fashion tints such as blue, green , purple, etc. are also available by special request.

Dark Gray: A true sunglass lens. Red based, it offers the darkest tint available for bright conditions. Good general purpose lens.

Brown or Amber: Red or Yellow based lens for contrast enhancement. Good for bright to medium lighting conditions. Gives red or yellow cast to objects, but blocks blue light to allow better depth perception especially on green (grass) or blue (sky) backgrounds. Used primarily for sports. Amber lens has more orange color to it than brown.

Yellow: Low light high contrast lens. This lens will tend to brighten things up so it should not be used in sunlight. Used often by skiers and hunters on overcast days. Blocks blue light to enhance contrast and depth perception.

Vermilion or Rose: Low light to medium light lens used often by cyclists, hunters, and fishers in early morning or early evening lighting. Offers good contrast enhancement but will color distort giving objects a rose cast.

If you have ever felt frustrated at needing both prescription glasses and prescription sunglasses to accommodate an outdoor lifestyle, you should consider photochromic lenses. Photochromic lenses darken when exposed to UV rays. The change is caused by photochromic molecules that are found throughout the lens or in a coating on the front of the lens. When the wearer goes outside, the lenses darken or tint. When the wearer goes back inside, the glasses become clear.

There are a variety of photochromic options available. Depending on what you choose, you can customize the lenses to your needs. Some lenses darken only in direct sunlight, while others darken in little or no direct light. Some are designed to darken while you are in the car to reduce road glare while you are driving. You can even choose the color of the tint. Ask your doctor what options are available.

Glare from wet roads, light reflecting off other vehicles, and glare from your own windshield can be annoying and dangerous. To eliminate this glare, we offer polarized lenses. Polarized lenses eliminate almost all glare, reducing eye strain and increasing visibility. Polarized lenses are the most effective way to reduce glare.

Most glare comes from horizontal surfaces, so the light is "horizontally polarized." Polarized lenses feature vertically-oriented "polarizers." These polarizers block the horizontally-polarized light. The result is a glare-reduced view of the world. Polarized lenses can make a world of difference for any outdoor enthusiast. Fisherman can eliminate the bright reflections from the water and actually see into the water more easily than with other sunglasses, golfers can see the green easier, and joggers and bikers can enjoy reduced glare from the road. In addition, drivers can enjoy the safety and comfort that polarized lenses provide while driving.