This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'What should be treatment modality in a case of congenital cataract involving visual axis? \nSelect and explain. \nA. Wait and watch, B. Operated when the baby reaches an appropriate age, C. Mydriatic s are given, D. Operate immediately', 'role': 'user'}, {'content': 'Answer: D \nExplanation: If a lenticular opacity is in the visual axis, it is considered visually significant and may lead to blindness. Immediate surgery is indicated in such groups. If the cataract is small, in the anterior poion of the lens, or in the periphery, no visual loss may be present. Extracapsular cataract extraction with primary posterior capsulectomy and anterior vitrectomy is the procedure of choice ( limbal or pars plana approach). Intracapsular cataract extraction in children is contraindicated because of vitreous traction and loss at the Wieger capsulohyaloid ligament.', 'role': 'assistant'}]