conjunctival concretions

concretions, conjunctival 

Minute, hard, whitish spots of calcium present in the palpebral conjunctiva due to cellular degeneration. This condition occurs most commonly in the elderly or in people with prolonged conjunctivitis. They are asymptomatic but may be removed with a needle. Syn. conjunctival lithiasis.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
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Reflex hypersecretion may be caused by blepharitis, trichiasis, distichiasis, entropion, conjunctival concretions, foreign bodies, dry eyes, eyelashes 'stuck' in the tear punctum, corneal ulcers, corneal abrasions, and anterior uveitis (through photophobia).