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
Lisch nodule seen in - 
Select and explain. 
A. Sympathetic ophthalmitis, B. Neurofibromatosis, C. Chronic iridocyclitis, D. Trachoma
B: Neurofibromatosis
Answer: B: Neurofibromatosis 
Explanation: Bilateral Lisch nodules are seen in neurofibromatosis type 1. These are hamaomas that develop during second - third decades, seen as tiny nodular pigmented lesions protruding above the iris surface. Other uncommon iris lesions in type 1 NF include congenital ectropion uveae and mammillations. Ref: kanski's 8 th edition , page no. 840