Inward turning of the eyelid is called?

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

Answer: (C)

Inward turning of the eyelid is entropion. When the lid margin turns inward, the eyelashes and lid edge rub against the cornea and conjunctiva, causing irritation, tearing, a gritty sensation, and potential corneal damage. This condition is often seen in the lower eyelid and can be congenital or develop with aging and scarring. It differs from outward turning of the lid (ectropion), which leaves the cornea exposed; from drooping of the eyelid (ptosis), which is a positional loss of eyelid height; and from blepharospasm, which is an involuntary, sustained contraction of the eyelid muscles causing blinking or eye closure rather than a fixed inward turn. Treatment aims to reposition the lid margin to protect the eye, sometimes requiring surgical procedures like canthoplasty or other lid-tightening/realignment techniques.