Ocular Demodicosis

Ocular demodicosis refers to Demodex mite overgrowth or mite-related irritation involving the eyelids, eyelashes, and surrounding eye area. It is commonly discussed in connection with Demodex blepharitis, where mites living around the lash follicles may contribute to collarettes, cylindrical dandruff, itchy eyelids, redness, burning, dry eye symptoms, lash-line crusting, lid margin inflammation, or recurring eyelid discomfort. Because ocular demodicosis can mimic allergies, dry eye, ordinary blepharitis, or chronic eyelid irritation, visible lash-line clues are important. This section explains how ocular demodicosis may appear, why eyelash debris matters, and how Demodex-related eye concerns may differ from other common eyelid problems.