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': 'Polychromatic lusture is seen in : \nSelect and explain. \nA. Complicated cataract, B. Diabetes mellitus, C. Post radiation cataract, D. Congenital cataract', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Complicated cataract Complicated cataract (i.e. cataract secondary to some intraocular disease) may be - Anterior coical Q in anterior segmental lesions as glaucoma, acute iritis, or, - Posterior coical Q in posterior segmental lesions as uveitis, RD, pigmentary retinal dystrophy. The second type of complicated cataract presents with posterior coical bread crumb appearance/ polychromatic lusture or rainbow cataract Q Complicated cataract occurs secondary intraocular disease e.g. Inflammatory conditions as uveitis. Degenerative conditions as retinitis pigmentosa, high myopia etc. Intraocular tumors Retinal detachment, Glaucoma etc.', 'role': 'assistant'}]