Which disorder is characterized by dehiscence of the levator aponeurosis?

Which disorder is characterized by dehiscence of the levator aponeurosis?

• A. SLK
• B. Ptosis (CLs related)
• C. Keratitis
• D. Blepharitis

Answer: (B)

A drooping upper eyelid occurs when the levator aponeurosis—the tendon that anchors the lifting muscle to the tarsal plate and skin—dehisces or separates. This loss of secure attachment means the eyelid loses part of its elevation strength, resulting in ptosis. In people who wear soft contact lenses, repeated rubbing or long-term lens wear can stress the aponeurosis and lead to this disinsertion, presenting as contact lens–related ptosis. The other options don’t involve the mechanism of eyelid lifting by the levator aponeurosis. Superior limbic keratopathy affects the corneal surface and lid margin, blepharitis is lid margin inflammation, and keratitis is corneal inflammation.

A drooping upper eyelid occurs when the levator aponeurosis—the tendon that anchors the lifting muscle to the tarsal plate and skin—dehisces or separates. This loss of secure attachment means the eyelid loses part of its elevation strength, resulting in ptosis. In people who wear soft contact lenses, repeated rubbing or long-term lens wear can stress the aponeurosis and lead to this disinsertion, presenting as contact lens–related ptosis.

The other options don’t involve the mechanism of eyelid lifting by the levator aponeurosis. Superior limbic keratopathy affects the corneal surface and lid margin, blepharitis is lid margin inflammation, and keratitis is corneal inflammation.