entropion

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entropion
  • noun
    A condition in which the eyelid is rolled inward against the eyeball, typically caused by muscle spasm or by inflammation or scarring of the conjunctiva (as in diseases such as trachoma), and resulting in irritation of the eye by the lashes (trichiasis). (It is, however, susceptible to entropion, an eye disease which can cause blindness as the lashes penetrate the cornea.)

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