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There are generally two kinds of cataract surgery namely phacoemulsification and trabeculectomy. Phacoemulsifying cataract surgery involves a small incision inside the outer covering of the lens.

Eye care products contain a number of antioxidants, vitamins, and minerals, among others. However, we also know that some ingredients are more effective than others when it comes to eye protection and other care. Antioxidants work by fighting free radicals in the body. Free radicals are chemical molecules that have become damaged by environmental irritants or other activities. Most people are aware of the benefits of vitamin E, but very few people understand the importance of some other eye health ingredients. Vitamins A, C, E, B, and vitamin D are natural sources of antioxidants, but some of these vitamins are not as effective as they should be in preventing damage to the eyes. Zeaxanthin and lutein are two examples of naturally occurring antioxidants found in fruits and vegetables. Other popular eye care ingredients include beta carotene, lutein, astaxanthin, and others. Another ingredient commonly found in the eye health ingredients market is Lutein. This powerful antioxidant reduces the formation of cataracts and macular degeneration, as well as preventing the buildup of cholesterol in the arteries. It is used in the treatment of cataracts, as well as prescription and nonprescription applications. Lutein is believed to help prevent age-related vision decline caused by the buildup of cholesterol in the arteries. Eye health supplements containing Lutein also improve healthy vision as it acts as a "cameruptogen." This is a compound that impedes the conversion of UVB rays into heat. This has been shown to improve overall eyesight over the long term. Free radicals are thought to contribute to cataracts and macular degeneration, but antioxidants such as Lutein prevent free radical damage. Antioxidants also prevent age-related eye diseases such as macular degeneration and cataracts. Recently, in April 2021, Kyowa Hakko launched paraprobiotic eye health ingredients to reduce fatigue.

Optometry equipment are widely used to monitor, diagnose, and prevent ophthalmic disorders such as glaucoma and cataract. Ophthalmology is a branch of science that deals with diagnosis and treatment of ophthalmic (eye) disorders.