I understand this to be an ocular irritation related protective mechanism resulting in a reduced upper eyelid position. However, I have had difficulty finding any publications that describe corneal irritation with resulting blepharoptosis. Does anyone have a reference for this condition?
In chronically inflamed eye associated with blepharospasm ptosis can occur, particularly if tarsal plate is affected due to trachoma, which could be thickening of plate, or thinning affecting LPS insertion on its surface or edge resulting in ptosis. I had recently operated a case by frontalis sling, where severe ptosis occurred due to peripheral keratopathy as result of blepharospasm for 10-12 years. Keratopathy has healed but ptosis was bothering patient, she improved.
1. Ptosis is a drooping or falling of the upper eyelid.
2. Trichiasis is a medical term for abnormally positioned eyelashes that grow back toward the eye, touching the cornea or conjunctiva. This can be caused by infection, inflammation, autoimmune conditions, congenital defects, eyelid agenesis and trauma such as burns or eyelid injury.
Articles on trchiasis http://emedicine.medscape.com/article/1213321-overview
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