Inward turning of the eyelid is known as:

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

Answer: (A)

Inward turning of the eyelid is called entropion. This happens when the eyelid margin rolls toward the eyeball, causing the eyelashes and lid skin to rub against the cornea and conjunctiva. That friction can lead to irritation, a gritty sensation, tearing, and even corneal damage if not treated. Entropion is different from ectropion, where the lid margin turns outward away from the eye, leaving the inner eyelid exposed and often causing dryness or excessive tearing. Ptosis is a drooping of the eyelid itself, usually from weaker eyelid muscles, which can obscure vision. Blepharitis is inflammation of the eyelid margin with redness and crusting, not a lid-turning issue. Entropion can be present at birth or develop later in life due to aging, scarring, or irritation, and management ranges from lubricating drops to surgical realignment of the lid margin to prevent lash contact with the eye.