Lens Information

Lens Strength:

Recorded in a measurement know as diopters (D), the strength of a lens can be manipulated by changing the material it is made from and by altering the curvature and shape of the lens. A minus (-) sign in front of the diopter numerical indicates that the lens is concave, a lens shape typically used to enhance distance vision. A plus (+) sign in front of the diopter numerical typically indicates a convex lens, a lens shape typically used to enhance close up vision.

Single Vision Lenses:

A single vision lens is an extremely common lens type because the lens has the same focal power throughout the entire lens. These lenses can be used to enhance your vision for reading or distance and corrects nearsightedness, farsightedness or astigmatism.

Progressive Lenses:

Progressive lenses are unique in that they have multiple prescriptions within the lens. These lenses are perfect for individuals who do not want to switch between multiple pairs of glasses. They are also perfect for individuals who do not like the visible and annoying line on bi focal glasses. Progressive lenses were created with natural vision in mind and they achieve just that. The prescription gradually increases in strength from the top of the lens where the distance prescription is located toward the bottom of the lens were the reading prescription is located.

Bifocal Lenses:

Bifocal lenses can be distinguished from other eyeglass lenses by the visible line at the bottom of the lens. This line is the border between the distance and reading prescriptions of the lens and is the simple solution to having 1 pair of eyeglasses. Like progressive lenses, bifocals allow for 2 different prescriptions in one lens yet with bifocals there is noticeable change between these prescriptions.


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