This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous Humour, Uveal Disorders, Subject name: Ophthalmology
[{'content': 'True statements about PHPV: \nSelect and explain. \nA. Visual prognosis is good, B. Generally unilateral, C. Associated with microphthalmia, D. Associated with exophthalmos', 'role': 'user'}, {'content': 'Answer: C \nExplanation: PHPV - persistent hyperplastic primary vitreous Always unilateral Feature = leukocoria Microphthalmia Traction retinal detachment Congenital cataract d/d - other cause of leukocoria :retinoblastoma, congenital cataract Rx - only goal to is to save eye & maintain existing visual activity Sx - pars plana lensectomy + excision of membrane with ant vitrectomy', 'role': 'assistant'}]