Lenses are an important part of vision and can be used in a variety of ways. Oculars, EYEPIECES, contacts, and menisci are all types of lenses. Oculars are lenses that are used to magnify objects, such as those found in microscopes and telescopes. EYEPIECES are lenses that are used to focus light, such as those found in binoculars and cameras. Contacts are thin lenses that are placed directly on the eye to correct vision. Menisci are curved lenses that are used to bend light, such as those found in eyeglasses. All of these lenses are essential for vision and have a variety of uses.