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Symptoms and Signs – Differential Diagnosis of Dry eyes
Corneal epitheliopathy: trigeminal dysfunction, contact lens use
Drugs: antihistamines, antidepressants, 13-blockers, contraceptive pills, diuretics
radiation), reduced Mucin layer (reduced vitamin A, burns, circatricial pemphigoid)
Reduced Eyelid closure: facial nerve palsy, Graves' disease, prolonged reading
Reduced Tear production: reduced Lipid layer (blepharitis), reduced Aqueous layer (involvement of lacrimal glands: Sjogren's syndrome, rheumatoid arthritis, SLE, surgery,


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