Contact lenses are thin, curved lenses placed directly on the surface of the eye to correct vision. They offer a convenient alternative to traditional eyewear and are available in various prescriptions for nearsightedness, farsightedness, and astigmatism. Contact lenses can be made from soft materials that conform to the eye’s shape or rigid gas permeable materials. They help maintain a natural field of vision, eliminate the need for glasses, and can even add color to the eyes. Proper care and hygiene are essential when using contact lenses to prevent irritation or infection.