Kontakt lenses are thin, curved lenses placed directly on the surface of the eye to correct vision problems. They can help people with nearsightedness, farsightedness, and astigmatism. Unlike glasses, they provide a wider field of vision and do not fog up or get in the way during physical activities. These lenses come in various types, including daily disposables and extended wear options. Contact lenses can be made from soft or rigid materials, allowing for comfort and breathability. Proper care and hygiene are essential to prevent eye infections and ensure the lenses remain safe to wear.