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
Ectopia lentis is seen in all of the following except: March 2007
assistant
The correct answer is  Ans. D: Down syndrome Ectopia lentis is a displacement or malposition of the eye's crystalline lens from its normal location. More common: Marf an syndrome Homocystinuria Weil-Marchesani syndrome Sulfite oxidase deficiency Hyperlysinemia Less common: Ehlers-Danlos syndrome Crouzon disease Refsum syndrome Sturge-Weber syndrome Pierre Robin syndrome