Single Vision Lenses provide correction for one field of vision. They have the same focal power throughout (top to bottom) and can be used to correct nearsightedness, farsightedness, astigmatism, or a combination of these disorders. This could be for distance, intermediate (computer), or near (reading) vision. Most people who wear glasses before the age of 40 have single vision lenses.
Single Vision lenses are available in a number of options, including regular Plastic CR39, Polycarbonate, Trivex, High Index, Transitions, Polarized and other eyeglass and sunglass single vision lens options.View All Single Vision Lenses
Bifocal Lenses have two parts: the upper part normally used for distance vision and the lower part used for near-vision tasks such as reading. Many people after reaching age 45 develop a condition called presbyopia, which is a deterioration in the ability of the eye's natural lens to expand or contract in order to focus on close objects. People with presbyopia need a special lens for reading and may need a different lens for seeing in the distance.
Until recently, bifocal eyeglasses had a line going across the entire length of the lens. Now there are a number of variations on the theme. All work the same way, by reserving part of the lens for near-vision correction. The rest of the lens can be used for distance vision correction or can have no correction at all.
The segment for near-vision correction can have one of several shapes:
Trifocal Lenses offer three focal points, usually for distance, intermediate and near vision. An additional segment above the bifocal allows you to view objects in the intermediate zone, about an arm's length away.
Trifocal lenses are available with the reading segments in a variety of shapes and widths. The most popular is the Flat Top, 28 or 35 millimeters wide. We offer a number of options for the trifocal lens, including regular Plastic CR39 Trifocals, Polycarbonate Trifocals, Trivex Trifocals, High Index Trifocals, Transitions Trifocals, Polarized Trifocals and other eyeglass and sunglass trifocal lens options.View All Trifocal Lenses Back to Top
Progressive Lenses are often referred to as "no-line bifocals." They eliminate the visible lines of traditional bifocals and trifocals and hide the fact that you need reading glasses.
They provide a more natural correction of presbyopia than bifocal or trifocal prescription eyeglasses.
Progressives are true "multifocal" lenses that provide a seamless progression of many lens powers for all viewing distances.
With progressive lenses, no one will ever know you need reading glasses. Progressive lenses are not only the most attractive lens to wear, but they also offer the most natural vision correction.