What are the dangers of reusable contact lenses?

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Reusable contact lenses more than triple the risk of contracting a fairly rare infection. And she, in turn, can lose sight.

A new study by British scientists showed that the risk of acanthamoeba keratitis increases by 3.8 times in users of reusable lenses. This is a type of parasitic damage to the cornea – the transparent protective outer layer of the eye. AK causes inflammation of the cornea. There are various factors that increase the risk of this keratitis, and repeated use of lenses, wearing them overnight or in the shower is one of them.

Over 200 patients of ophthalmic hospitals participated in the survey, including 83 victims of acanthamoeba keratitis and 122 people who had other eye problems. Reusable soft contact lens wearers were found to have an almost four times higher risk of developing AK compared to disposable or daily lens wearers.

Showering without removing the lenses increased the chance of infection by 3.3 times, and with unremoved lenses increased this possibility by 3.9 times. According to researchers, up to 62% of cases of this infection near England and other countries simply would not have happened if everyone wore disposable lenses. And in this case, it is much safer for health to use ordinary glasses.