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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In patients with anterior uveitis, decrease in vision due to posterior segment involvement can occur because of -
assistant
The correct answer is  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.