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
Fetal /choroidal fissure is closed by which week of gestation
assistant
The correct answer is  Fetal fissure is closed by 6th week Failure to close can lead to formation of coloboma(eg- pear shaped coloboma of iris,chorioretinal coloboma i)