Different Types of Lenses for Your Glasses
Wearing eyeglasses is a simple, quick, and easy way to correct vision problems. Although, with glasses, there comes an opportunity to select from a variety of lenses, frame designs, and even lens protective coatings. Types of Eyeglasses There are two types of eyeglass lens designs: single vision used to correct distance, and multifocal, designed to correct both distance and near vision. Bifocals. Bifocals are the most common type of multifocal, and the lens is split into two sections. They have a correction for reading on the bottom half of the lens and another for seeing at a distance on the top. If you are experiencing presbyopia, an age-related vision change, you may be prescribed bifocals. Trifocals. Trifocals correct three different vision problems, including distance vision, intermediate vision, and near vision. Progressive lenses. Progressive lenses function similarly to bifocals or trifocals; however, they have a smooth transition between distance and near vi...