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Trifocals are eyeglasses with lenses that have three regions which correct for distance, intermediate (arm's length), and near vision. John Isaac Hawkins developed the trifocal lens in 1827. Trifocals are mostly used by people with advanced presbyopia who have been prescribed 2 diopters or more of reading addition. The intermediate addition is ...
Eyebuydirect, Inc. is an online retailer of prescription glasses, based in Austin, Texas. The company also sells prescription and non-prescription sunglasses, sport sunglasses, and computer glasses designed to reduce glare.
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
Trifocal Trifocal lenses are similar to bifocals, except that the two focal areas are separated by a third area (with intermediate focus correction) in the middle. This segment corrects the wearer's vision for intermediate distances roughly at arms' length, e.g. computer distance.
Black Friday came early at EyeBuyDirect, and right now with code SNEAKPEAK you can buy a pair of glasses and get another pair for free, in addition to 20% off. You can never have too many pairs of ...
Check out a few of the retailer’s stylish options below. Morning Round Warm Tortoise Eyeglasses, $39. $39 at Eyebuydirect. Hepburn Cat Eye Clear Eyeglasses, $45. $45 at Eyebuydirect. Borderline ...
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