It is affecting the tears and ocular surface resulting in symptoms of discomfort, visual disturbance, and tear film instability, with potential damage to the ocular surface.
The tear film of the eye consists of three layers: oil (produced by meibomian glands at the edges of the eyelids near the eyelashes), water (produced by the lacrimal glands under the eyebrow), and mucus (produced by conjunctival glands on the white of the eye). Each serves its own purpose. The disruption of the oily layer will cause Evaporative Dry Eye Disease, which is the most common type. The disruption of the watery layer would cause Aqueous deficiency and Dry Eye Disease. When patients don’t produce enough tears in one of two layers it can become very symptomatic and debilitating.
Symptoms: Common symptoms of Dry Eye Disease are itching, redness, burning, tearing, blurry vision, ocular fatigue, and even headaches. Some patients mention foreign body sensations and some say they cannot keep their eyes open for very long. People who work long hours at a computer blink much less than should, which causes disruption of the tear film and quicker tear evaporation. All these symptoms may be very painful and debilitating in our daily lives.
Causes: There are multiple factors that affect tear production. Older age( women affected more than men), smoking, contact lens wear, environmental irritants such as dry air, smoke, air conditioning, heating all contribute to worsening Dry Eye Disease.
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