Q. My eyelid was irritated when I saw my ophthalmologist last year. He said I had eyelid mites and had me use Noveha, a tea tree oil-based eyelid cleanser. In addition, I used neo/poly B/Dexamethasone ointment for two weeks. After two weeks, he prescribed Xdemvy and recommended I continue use of the eyelid cleanser.

My eyes were constantly filmy and sensitive to light for the first two weeks. I stopped the Xdemvy after four days as my eyes began to ache and burn. Can you shed some light on this condition for me?

A. Eyelid mites are also known as Demodex. They live in the follicles of the eyelashes. Some people seem to react strongly to them by developing inflammation.

Lotilaner (Xdemvy) is a compound that paralyzes and kills the mites. A review of six randomized clinical trials conclude

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