Reusing Contact Lenses Will Make You Significantly More Susceptible for a Specific Infection

Reusing Contact Lenses Will Make You Significantly More Susceptible for a Specific Infection

Many people who have problems with their vision are afraid of contact lenses. They prefer wearing glasses instead, but lenses might still remain the best option if you rule out the fear, which is usually not objective. But still, you need to get your ducks in a row first.

One of the aspects that you need to take into account when considering wearing contact lenses is that you need to change them at a certain point. This obviously requires a higher financial investment, but it’s a “must” if you don’t like the idea of wearing glasses. 

Avoid soft reusable contact lenses

According to a study led by the University College London’s Institute of Ophtalmology and Moorfields Eye Hospital, using soft reusable contact lenses increases your chances of developing a rare eye infection known as Acanthamoeba keratitis (AK). The condition consists of inflammation and pain in the eye’s cornea. The risk becomes almost four times higher if you use such contact lenses. Wearing them overnight or during showers also increases your risk of dealing with the aforementioned eye infection.

In some rarer cases, AK can cause a 25% vision impairment or even blindness.

John Dart from the UCL Institute of Ophthalmology and Moorfields Eye Hospital NHS Foundation Trust, who’s also the lead author of the study, said:

In recent years we have seen an increase of Acanthamoeba keratitis in the UK and Europe, and while the infection is still rare, it is preventable and warrants a public health response.

Contact lenses are generally very safe but are associated with a small risk of microbial keratitis, most commonly caused by bacteria, and which is the only sight threatening complication of their use. Given that an estimated 300 million people across the globe wear contact lenses, it is important that people know how to minimise their risks for developing keratitis.

For the new study, over 200 participants had to complete a survey. 83 of them were suffering from AK.

The new research was published in Ophtalmology.


Cristian Antonescu

Even since he was a child, Cristian was staring curiously at the stars, wondering about the Universe and our place in it. Today he's seeing his dream come true by writing about the latest news in astronomy. Cristian is also glad to be covering health and other science topics, having significant experience in writing about such fields.

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