Contact lenses also known as corneal contact lens. Because of its better optical effect, it’s suitable for those with high degree of anisometropia, monocular-free crystal, corneal irregular astigmatism, etc. Especially glasses for high degree of myopia and some should not be wearing glasses the framework of professional personnel, such as actors, athletes, restaurant waiters, etc.
One of contact lens’ advantages is its ability to show people’s natural beauty, so it is very popular among people. Currently the world’s growing number of people who wear contact lenses, to a certain extent, has been gradually replaced by ordinary glasses. The main ingredients and the basic efficacy of the material in contact lenses which are produced by different manufacturers are all the same.
Earliest material used in rigid contact lenses is polymethacrylate (PAMN). Soft contact lenses is most widely used on the market currently. Its material is poly-hydroxyethyl methacrylate (HEMA), which has a certain air permeability and high water content, making you feel comfortable while wearing it. Disposable contact lenses don’t refer to traditional contact lenses which need to be abandoned only when your eyes feel discomfort or there are obvious sediments on the lenses. Disposable contact lens is the safest, but it costs the highest as well. The main material eyewear for another semi-hard style contact lenses is fluoro silicone rubber, it is characterised by very high air permeability and good optical effects, its life expectancy can reach 3 or 5 years.
Eye check is necessary before you select contact lenses. Trachoma, keratitis, conjunctivitis, hypertension, diabetes, disordered endocrine, etc. people who have such diseases are not suitable to put on contact lenses. Besides, minors are not suitable, eit Regardless of which kind they are, especially soft ones, contact lenses easily adsorbed sediment because of electrostatic interaction. re sediments can not only affect the lenses’ function, but also cause eyes diseases, such as corneal edema, corneal infection, conjunctivitis, acute or chronic eyes hyperaemia and etc. Therefore, those who wear contact lenses should have a certain cultural qualities and health knowledge, so that wear healthily.
Even the best lenses can not be ignored, it is necessary to use lens cleaning water with multi-function and high enzyme cleaning tablets to dissolve protein deposits on the lenses every day. In order to make eyeglasses frames lenses more comfortable to wear, and the lenses are longer life, and you must not be too troublesome for the easy way, you must adhere to care procedures of the lenses. Meanwhile, keep the storage box clean, and keep the lotion bottle away from any other items. Wash your hands before touching contact lenses. Abandon the used lotion after 3 months, because it’s easily contaminated and fail to disinfect the lenses.
As the lens of contact lenses are light and thin, people who wear them should not have long fingernails, so as to avoid lens damage. Each pair of lenses has a certain life, the eye health and care practices for long-term wearers should comply with opticians guidance, and regularly replace lenses.
Re - examine eyes periodically, wearing contact lens should check one time at least six months, while people who wear them for the first time should check it after a week, if you do not feel good, you’d better have a timely treatment. Wearing contact lenses should not be more than a specified time, not wear contact lenses for swimming and bathing, in order to avoid affecting the health of eyes and loss of lenses.