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
True about keratoconus –a) ↑ curvature of cornea b) Astigmatismc) K.F. ring seend) Thick corneae) Soft contact lens used
assistant
The correct answer is  Some guides have also given option c as the answer, which is incorrect.
Some confusion exists between Fleisher rings and kisser- Fleischer (KF) ring. Kayser- Fleischer(KF) rings are caused by copper deposits and are indicative of Wilson's disease, whereas Fleischer rings are caused by iron deposits and are indicative of keratoconus.
Cornea is thin (not thick).
Rigid gas permeable contact lenses (not soft contact lenses) are used.