Contact lenses are thin, curved discs placed directly on the eye's surface to correct vision. They can be made from soft or rigid materials and are available in various types, including daily wear and extended wear options. Proper hygiene is essential to prevent eye infections, so users should wash their hands before handling lenses and follow the recommended cleaning and storage procedures. Wearing contact lenses offers several advantages over traditional eyeglasses, such as a wider field of vision and the ability to participate in sports without worrying about frames. However, it's important to consult an eye care professional to determine the best type of lenses for individual needs and to ensure proper fitting.