Inward turning of the eyelid is called?

• A. Entropion
• B. Ectropion
• C. Ptosis
• D. Blepharospasm

Answer: (A)

Inward turning of the eyelid is entropion. This happens when the margin of the eyelid rolls toward the eyeball, so the lashes rub against the cornea and conjunctiva. That contact causes irritation, foreign-body sensation, tearing, and can lead to corneal injury if not treated. It contrasts with ectropion, which is outward turning that exposes the inner eyelid surface and tends to cause dryness and tearing; ptosis, which is drooping of the eyelid over the pupil and can blur vision; and blepharospasm, which is an involuntary tightening or spasm of the eyelid muscles. Treatments range from lubricating eye drops for mild cases to surgical correction to reposition or tighten the eyelid when the condition is more severe.