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Dry eye syndrome can lead to blurred vision, instability of the tear film, increased risk of damage to the ocular surface such as scarring of the cornea, and changes in the eye including the neurosensory system. [2] [6] Dry eye occurs when either the eye does not produce enough tears or when the tears evaporate too quickly. [2]
Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [1] which is sometimes used to describe that condition, although there may be other causes.
Visual acuity with Near chart without correctors Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field
Watery eyes – due to excessive tearing. [7] Red eyes – due to dilated blood vessels on the sclera. [7] Swollen eyelids – due to inflammation. [7] Crusting at the eyelid margins/base of the eyelashes/medial canthus, generally worse on waking – due to excessive bacterial buildup along the lid margins. [4] [5] [7]
Characteristic dryness appears at a number of locations, such as the tongue, face, and eyes. Marked at left are the salivary glands (which may be swollen), not a facial rash. The hallmark symptom of Sjögren syndrome is dry mouth and keratoconjunctivitis sicca (dry eyes). [16] Vaginal dryness, dry skin, and dry nose may also occur. [16]
Particularly when associated with dry eyes, blepharospasm may be relieved with warm compresses, eye drops, and eye wipes. [40] [41] A Japanese study showed that warm compresses containing menthol were more effective in increasing tear film. [42] Drugs used to treat blepharospasm are anticholinergics, benzodiazepines, baclofen, and tetrabenazine ...
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