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
All of the following are causes of night blindness except
assistant
The correct answer is  Devics disease is optic neuritis with myelitis It is also called neuromyelitis optica Refer Khurana 6th edition page number 329