The proper eyeglasses are important to help your vision problem.
Eyeglasses are worn to correct a variety of vision problems by ensuring the retina gets enough light. Your vision problem will determine the best suited lens for you. In past years all eyeglasses were only made of glass. Today there are fancy plastic lenses being used -- more resistant, durable, convenient and affordable than you might imagine.
Polycarbonate
Polycarbonate is a popular choice if you are nearsighted, and it's well known for durability. Ideal for those involved in sports because the lenses are impact-resistant. This plastic lens also makes them a popular choice for kid's glasses and provides protection from ultraviolet rays. Polycarbonate is also thin and lightweight in comparison to standard plastic lenses.
Photocromic
This type of lens can be made from either plastic or glass. When exposed to sunlight the lenses transition from lightly tinted to dark -- two benefits in one and a great alternative for people who wear prescription sunglasses. Photocromic lenses are typically already tinted because the lens will not transition to dark if something blocks the ultraviolet rays like a windshield.
Aspheric
Generic plastic lenses are more round while aspheric lenses are more thin and flat. These are suitable for most prescriptions. The lens has less of a bulge on the glasses. Vision is more crisp with aspheric lenses when moving your visual focus from the center of the lens to either side or up and down. This type of lens weighs less than standard round lenses.
High-Index Plastic
These are created for people who need a very strong prescription. High-index lenses are more thin and flat than standard plastic lenses. Composed of a specific plastic material it refracts light differently. These lenses are thin and light and offer comfort -- but for a higher price.
Tags: plastic lenses, lenses more, aspheric lenses, lenses more thin, more thin, more thin flat, popular choice
