Different Types of Glasses

When you first realize that you have a problem with your vision, you may imagine that getting corrective lenses is as easy as having an eye exam and walking out with your new pair of glasses. Fortunately, you have various choices of eyeglass lenses. The lenses your eye doctor prescribes depend on the type and magnitude of your vision problem, as well as your lifestyle.

The first type of lenses is polycarbonate lenses. These lenses are ideal for someone with an active lifestyle or for kids, as they are scratch and break-resistant. These lenses also provide protection from ultraviolet rays.

Trivex lenses are a newer alternative to polycarbonate lenses. Much like polycarbonate lenses, these lenses are difficult to break or scratch and offer UV protection. Yet, they are lighter in weight and as they are made from different materials, they may correct vision better than polycarbonate lenses for some individuals.

High index plastic lenses are normally prescribed for patients who require a strong prescription. These lenses are thin and lightweight but they provide all of the vision correction power of the old thick glasses that patients used to dread wearing. These lenses may also magnify the eyes less than the old style thick lenses, resulting in a more attractive appearance.

Aspheric lenses correct vision differently than other lenses because they use a combination of curvatures to correct vision. This method of vision correction results in a lens that is thinner and flatter, and that has a larger area of the lens that is useful for correcting vision.

Photochromic lenses change from light to dark and vice versa, based on the amount of light in the environment. Many individuals appreciate these lenses since they eliminate the need to have a pair of prescription sunglasses as well as prescription glasses. Yet, these lenses may not darken in the car since the auto glass filters out sufficient UV rays, preventing the lenses from darkening.

Polarized lenses remain one of the most popular lenses for prescription sunglasses. These lenses reduce glare, making them best for sports or for driving. Yet, these lenses may render the liquid crystal display on a dashboard invisible, so it is best to try out a pair in your car before you make a decision.

Unless you have very specialized needs or a very strong prescription, you will have different choices of lenses for your eyeglasses or prescription sunglasses. If you are unsure which lenses are best for you, your optometrist or optician can help you decide.

Dr. Rabbani, North Hollywood optometrist, can help you buy eyeglasses that are best for your eyes.


March 6, 2013 | Author: | Posted in Health and Fitness

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