Single vision lenses are optical lenses designed to correct vision at one specific distance, whether for seeing far away or up close. They are commonly used in prescription glasses for people with nearsightedness, farsightedness, or astigmatism. These lenses provide a clear and focused view for the designated distance, making everyday activities like reading or driving easier. Unlike multifocal lenses, which have multiple prescriptions for different distances, single vision lenses offer a straightforward solution for those who need correction for only one type of vision. They are available in various materials and coatings, allowing for customization based on individual needs and preferences.