<prompt> Increased intraocular tension is seen in all except:Epidemic dropsyBranch retinal vein occlusionMalignant melanomaPhthisis bulbi  <response>: Ans. d Pthisis bulbiOption b - Open Angle Glaucoma is the most frequent local alteration predisposing to RVO, its it comprises venous outflow by increasing IOPRaised IOP causes compression of central retinal vein as it exits through the fenestrations of Lamina CribrosaLeads to thrombus formation distal to compression due to turbulent blood flowRef: Ryans Retina 5e, p. 441Option c - 5 of eyes with intraocular tumours malignant melanoma develop a 2deg elevation of IOP due to trabecular block or angle closure NVI 