Contact lenses are small, thin discs made of a transparent material.
Contact lenses can be a safe and effective way to correct vision for most people. However, people who wear them must follow the directions of their eye specialist - this care includes how long the lenses can be worn continuously, how they should be cleaned and stored, and the good hygiene practices to follow when wearing or handling the lenses. Many people wear contact lenses because they prefer them to eye glasses - contact lenses do not slip down your nose or fog up in the wintertime. Contact lenses can cause some problems that do not produce any symptoms that the contact lens wearer may not notice. For this reason, contact lens wearers should have regular checkups with a specialist who prescribes and fits contact lenses.