Single vision lenses are a type of eyeglass lenses that correct vision for just one distance, either close up or far away. This means that the entire lens is correcting one vision problem, such as nearsightedness, farsightedness, or astigmatism. Single vision lenses are the most common type of glasses lens prescribed. They are suitable for people who require correction of only one type of vision. For example, people who are nearsighted or farsighted but not both. Single vision lenses are less expensive than multifocal lenses, such as bifocals or progressives. They can be customized with a wider variety of coating options. People who require correction for both near and far visual needs should opt for bifocal or multifocal eyeglasses.