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Demodex mites are microscopic parasites that live in hair follicles and oil glands. Everyone has some mites, but when their numbers increase they can cause problems around the eyelids and eyelashes. Excessive mites may contribute to blepharitis, blocked oil glands, irritation and dandruff-like debris around the lashes. Risk factors include aging, weakened immune system and poor hygiene.
read more about eye mites demodex ...Demodex overgrowth occurs when the immune system can't control mite populations. Risk factors include older age, compromised immunity, chronic skin conditions and inadequate eyelid hygiene. Mites can carry bacteria that cause secondary infections or block oil glands.
Symptoms include itching and burning around the eyelids, red crusty eyelids, a feeling of something in the eye, blurred vision, tearing and misdirected lashes. Tube-like dandruff or sleeves at the base of eyelashes are characteristic signs.
Diagnosis is made by examining eyelashes with a slit lamp or microscope to look for mites or cylindrical dandruff. Management involves cleaning the eyelids with tea tree oil-based wipes, using prescription lotilaner eye drops, or applying creams containing sulfur, permethrin or ivermectin. Proper hygiene, including washing hair, towels and bedding, helps reduce mite populations.
Good eyelid hygiene plays a strong role in preventing problems. Remove eye makeup thoroughly, avoid sharing towels or cosmetics and replace mascara regularly. Treat underlying skin conditions and use anti-mite products as directed by your doctor. Regular eye exams can help detect Demodex overgrowth early.
Demodex mites are part of the normal skin flora and aren't highly contagious. However, excessive mites can spread through close contact or shared items. Good hygiene reduces transmission.
Nearly everyone has some Demodex mites, but most people have no symptoms. As we age, populations may increase, especially if eyelid hygiene is poor.
Lotilaner is an FDA-approved eye drop medication that kills Demodex mites. It is typically prescribed for moderate to severe Demodex blepharitis and applied once or twice a day under a doctor's guidance.
Demodex overgrowth doesn't directly cause vision loss, but the resulting inflammation and blocked oil glands can lead to blepharitis and dry eye. Treating Demodex helps prevent complications and improves comfort.