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Selecting a Type of Lens For Your Vision
All of the lenses in this section are Free-Form DigitallySurfaced lenses. This is a big deal. If you’re not aware of the differences please follow the link ablove.
SINGLE VISION
Single Vision lenses correct distance vision only. There is no magnification for reading in the bottom of the lens. If you never wear reading glasses, choose a Single Vision lens here.
PROGRESSIVE
Progressive lenses have a reading portion in the lower area of the lens that gets progressively stonger toward the bottom of the lens. Progressive lens are available in any Rx-able frame.
If you’re ordering sunglasses and you don’t wear progressive lenses every day, you may want to get acclimated to your first pair while participating in a sport or riding a motorcycle. We typically use Short Corridor progressive lenses in sports eyewear. You can expect the reading area in our sports sunglasses to be a bit lower than you have in your everyday progressive lenses. Once again, we are assuming that distance vision is a bigger priority than near vision. Let us know if you are ordering glasses for fishing, or if you want a larger reading area. If you’re ordering a progressive lens we will send you a pair of the glasses so you can get a picture of the glasses on your face. We will use Photoshop and the known height of the lens to calculate where to place the reading corridor in the lens.
�Selecting a Lens Material:
There are only two lens materials approved for use in sports sunglasses: Polycarbonate and Trivex.
Polycarbonate is the most popular lens for sports glasses. It is unbreakable, and is available as a Tinted, Transitions, Clear, or Polarized lens.
Trivex was developed by the U.S. Military as an improvement over polycarbonate. Trivex has a higher Abbe Value than polycarbonate, so there is less Chromatic Abrasion in a Trivex lens. (less peripheral color distortion) Trivex is also available as a Tinted, Transitions, Clear, or Polarized.
CR-39 lenses are made from a plastic that is used frequently in everyday eyewear. This material is breakable, so it may not be a good choice in eyewear intended for active-sport use. We can use CR-39 lenses in prescription inserts that are mounted behind a polycarbonate lens or in a goggle, or in glasses used for driving, fashion, hanging out at the pool, etc.
Polarized Lenses reduce glare and images appear sharper and clearer, increasing visual clarity and comfort.
Photochromic Lenses start out clear indoors, in the shade or inside a car, but turn dark in the bright sunlight.
