Which term is the inward turning of the eyelid edge?

Which term is the inward turning of the eyelid edge?

• A. Entropion
• B. Ectropion
• C. Blepharitis
• D. Chalazion

Answer: (A)

Entropion is the inward turning of the eyelid edge, so the lid margin curves toward the eyeball. When the lid turns inward, the eyelashes can rub against the cornea and conjunctiva, causing irritation, a gritty sensation, and potential corneal damage if not treated. This differs from ectropion, where the lid margin turns outward away from the eye, leading to poor tear drainage and exposure. Blepharitis is inflammation of the eyelid margins with redness and crusting, not a change in lid position. Chalazion is a lump caused by a blocked meibomian gland, also not a lid-edge inversion. The described inward turn corresponds to entropion.

Entropion is the inward turning of the eyelid edge, so the lid margin curves toward the eyeball. When the lid turns inward, the eyelashes can rub against the cornea and conjunctiva, causing irritation, a gritty sensation, and potential corneal damage if not treated. This differs from ectropion, where the lid margin turns outward away from the eye, leading to poor tear drainage and exposure. Blepharitis is inflammation of the eyelid margins with redness and crusting, not a change in lid position. Chalazion is a lump caused by a blocked meibomian gland, also not a lid-edge inversion. The described inward turn corresponds to entropion.