Extended-wear lenses are contact lenses that are worn for a longer duration than usual. They can be worn for days or even weeks at a time, without the need for removal or cleaning. These lenses are specifically designed to allow more oxygen to reach the cornea, making them safe for longer wear. Synonyms for extended-wear lenses include continuous-wear lenses, overnight lenses, 24-hour lenses, and extended-duration lenses. They are popular among people who want to avoid the inconvenience of daily removal and insertion of contact lenses. However, it is important to consult an eye doctor before using any type of extended-wear lenses to avoid any potential risks or complications.