Dry Eye Disease
Dry eye does not necessarily mean your eyes are “dry,” but that there are signs and/or symptoms of dryness. Many people who suffer from “dry eye” have chronically watery eyes because of an imbalance in the systems that maintain the ocular surface. Dry eye disease is often associated and exacerbated by other conditions such as blepharitis, meibomian gland disease, and rosacea.
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Dry eye disease is very common especially in today’s world when we are all involved in electronics, whether it is at work or at home in entertainment. Additionally, in patients with glaucoma or with environmental allergies, the glaucoma or allergy eye drops tend to contribute to additional dryness. It is a chronic condition.
OIL (LIPID) LAYER:
WATER (AQUEOUS) LAYER:
Causes of Dry Eye Disease
The causes of dry eyes are multifactorial:
6. Environmental factors.
Windy and dry climates increase tear evaporation
Digital eye strain: when we focus on a screen (computer, cellphone, iPads) or when reading for prolonged period, we naturally reduce our blinking rate, causing evaporative dry eyes.
Air conditioners or heaters are associated with tear insufficiency.
7. Other factors.
Contact lens use
Eyelid surgery like upper lid blepharoplasty