system
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 homocystinuria, lens subluxates in
assistant
The correct answer is  Homocystinuria. It is an autosomal recessive, inborn error of metabolism. In it the lens is usually subluxated inferior and nasally. Systemic features Fair complexion, malar flush, mental retardation, fits and poor motor control Diagnosis is established by detecting homocysteine in urine by sodium nitro-prusside test. Ref;A.K.Khurana; 6th edition; Page no:216 QUESTION REPEATED