This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
Increased intraocular tension is seen in all except: 
Select and explain. 
A. Epidemic dropsy, B. Branch retinal vein occlusion, C. Malignant melanoma, D. Phthisis bulbi
D: Phthisis bulbi
Answer: D: Phthisis bulbi 
Explanation: Ans. (d) Pthisis bulbiOption b - Open Angle Glaucoma is the most frequent local alteration predisposing to RVO, its it comprises venous outflow by increasing IOP|Raised IOP causes compression of central retinal vein as it exits through the fenestrations of Lamina Cribrosa|Leads to thrombus formation distal to compression due to turbulent blood flow(Ref: Ryan's Retina 5/e, p. 441)Option c - 5% of eyes with intraocular tumours (malignant melanoma) develop a 2deg elevation of IOP due to trabecular block or angle closure (NVI)