This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Ophthalmology
Fasanella servat operation is done for 
Select and explain. 
A. Myasthenia gravis, B. Horner syndrome, C. Congenital ptosis, D. Drug induced ptosis
B: Horner syndrome
Answer: B: Horner syndrome 
Explanation: The Fasanella-Servatprocedure is used for the repair of mild to moderate ptosis. ... RESULTS: Ptosis was classified as involutional, occurring after intraocular surgery, congenital, due to Horner's syndrome present after levator surgery, and myogenic/other. Ref khurana 6/e