No eyes don't use eye drops

Peking University third hospital, an associate professor of ophthalmology LiXueMin

Sources: health

        Recently, online exposure out most eye drops contain preservative, incorrect use may get chronic conjunctivitis, let many consumer it is the colour change. Experts say, although eye drops contain preservative, but moderate use will not cause damage to the eyes.

        Most eye drops for dose packing eye ophthalmic preparation for patients to use many times. 1 bottle of eye drops for the patient to use two weeks, some even can provide a month of therapy treatment, avoid many patients go to a doctor to prescribe medicine. But large dose eyedrop kaifeng, may be the environment microbial contamination.

        Eye drops sealing surface contact with eyes vulnerable to pollution

        Some people don't know the correct way to use, often be eye drops sealing surface contact eye table, eyelash or other bacteria place, make eye drops of pollution, it may increase in patients with serious eye infection risk. There have been studies show that high doses of packing without preservatives eye drops, no matter in the court conditions or lobbyists use conditions, all have a high incidence of microbial contamination (8.4%), the antibiotic eye drops pollution rate higher, as high as 19%. In order to prevent eye drops in the use and the preserved process was tears and environment of the microbial contamination, most eye ophthalmic preparation (including antibiotic) are with bacteriostatic agent (also called preservative).

        The eyes are the most delicate organs of body, used in eye ophthalmic preparation of bacteriostatic agent requirements to eye table irritating smaller. Their function is to restrain bacterial growth, its itself may not be able to kill bacteria, but through the interference microbial organisms growth, reproduction and metabolism to play bacteriostatic action. But to eye tissue cells to produce effect, this also is bacteriostatic agent exist eye cell toxicity reason. Clinical application of eye drops containing bacteriostatic agent generally include the following: 1. The hydroxy benzoic acid esters, such as hydroxy methyl benzene, ethylparaben, etc. 2. Cationic surfactant, such as benzalkonium chloride, benzalkonium bromide, etc. 3. Alcohols, such as acetone tertiary butyl alcohol. 4. Organic mercury class, such as thimerosal, mercury nitrate. 5. Acids, like a mountain pear acid. 6. New antibacterial agent.

        No eyes don't the long-term use of eye drops

        Short-term use preservative eye drops, such as a few weeks or a month or two would not cause the ocular surface damage, but the long-term use of must be vigilant preservative cause of ocular surface damage. Bacteriostatic agent to cells and tissues of the main hazards caused by: failure LeiMo stability, or direct damage LeiMo plays an important role in the stability of the epithelial cell microvilli; Corneal epithelial cell damage the close connection; Inhibition of cell mitosis; Make conjunctiva of lymphocyte transformation and gathered to plasma cells; The immune mechanism cause inflammation and allergic reaction. Patients with symptoms of pain, a burning sensation, dry, tears can't specific irritation symptoms.

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