Beauty enhancement or need , because whatever it is , the use of contact lenses is increasing day by day. Women wear contact lenses to make themselves attractive in various programs or events. Many again wear contact lenses instead of glasses. However, wearing contact lenses continuously can lead to various problems. Let's learn more about contact lenses. Types: Lenses are generally of three types. 1. Hard contact lens 2. RGP contact lens 3. Soft contact lenses can cause problems: - The chemicals in the lens cleaning fluid can cause eye allergies. - Water accumulates in the black stone of the eye , later there may be sores. - Contact lens pressure can cause permanent astigmatism or visual impairment in the eye. - The lens may become blurred and damaged. Terms of use: - First of all do not use contact lenses without the advice of a specialist doctor - Contact lenses should be cleaned regularly with a specific solution or liquid. - Do not use expired liquids. - Change contact lenses as you get older. - Hard contact lenses should not be used for a long time. If necessary, it can be used daily for a short time (3-4 hours). - RGP and soft contact lenses can be used for 15-20 hours. - It is better to clean the lens with a specific liquid or solution every 24 hours. - If the eyes are red while using contact lenses, the lenses should be removed and the advice of an eye specialist should be taken immediately. - Before wearing the lens, you must clean your hands thoroughly. Never pinch the contact lens with your fingernails as it may tear the lens. - Change the solution after each use. - Never go in the sun or heat after the lens , it can cause serious damage to the eyes in the lens. - Do not give tears while wearing lenses. - Do not roll your eyes while wearing lenses. - If any sand or dirt enters the lens, immediately remove the lens. - Before going to sleep, you must open the lens and sleep. In addition, the things to keep in mind when buying contact lenses: - Before buying, the date of manufacture and expiration should be checked. - Need to buy a new solution with contact lenses. -Use contact lenses of a color that matches the color of the skin. You should not use any colored lenses that make you look out of place. -Use a separate box for each contact lens and make sure it is full of solution.