Which term describes inward turning of the eyelid?

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Prepare for the Certified Paraoptometric Assistant (CPOA) Exam. Study with extensive flashcards and multiple choice questions with explanations. Enhance your skills and knowledge to succeed.

Multiple Choice

Which term describes inward turning of the eyelid?

Explanation:
Entropion is the inward turning of the eyelid so that the lid margin and eyelashes rub against the eyeball. This can irritate the cornea and conjunctiva, causing a gritty sensation, tearing, and potential corneal damage if not treated. It most commonly occurs with aging as eyelid tissues lose tone, but can also be congenital or result from scarring or muscle imbalance. By contrast, ectropion is outward turning of the eyelid, leaving the inner surface exposed. Ptosis is drooping of the upper eyelid due to weakness of the lifting muscles, not turning of the lid. Blepharospasm is an involuntary spasm or tight closure of the eyelids, not a positional change of the lid.

Entropion is the inward turning of the eyelid so that the lid margin and eyelashes rub against the eyeball. This can irritate the cornea and conjunctiva, causing a gritty sensation, tearing, and potential corneal damage if not treated. It most commonly occurs with aging as eyelid tissues lose tone, but can also be congenital or result from scarring or muscle imbalance.

By contrast, ectropion is outward turning of the eyelid, leaving the inner surface exposed. Ptosis is drooping of the upper eyelid due to weakness of the lifting muscles, not turning of the lid. Blepharospasm is an involuntary spasm or tight closure of the eyelids, not a positional change of the lid.

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