Tear Film Dysfunction

Tear film dysfunction happens when the tear layer that protects and lubricates the eyes becomes unstable, imbalanced, or evaporates too quickly. It may appear as dry eye symptoms, burning, grittiness, watery eyes, blurred vision, light sensitivity, redness, or recurring ocular surface irritation. In Demodex blepharitis, lash-line buildup, collarettes, cylindrical dandruff, itchy eyelids, lid margin inflammation, and meibomian gland dysfunction may all contribute to an unhealthy eyelid environment that affects tear quality. This section explains how tear film dysfunction may connect with Demodex-related eyelid concerns and what visible lash-line clues may point to recurring dry eye or eyelid inflammation patterns.