This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Uveal tract, Subject name: Ophthalmology
In patients with anterior uveitis, decrease in vision due to posterior segment involvement can occur because of - 
Select and explain. 
A. Visual floaters, B. Inflammatory disc edema, C. Exudative retinal detachment, D. CME
D: CME
Answer: D: CME 
Explanation: Posterior involvement is changes in the vitreous and retina: Exudates and inflammatory cells may be seen in the anterior vitreous after an attack of acute iridocyclitis. Cystoid macular edema(CME) may occur, specially in the chronic iridocyclitis.