Fleischer ring is due to
(Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 194)Some confusion exists between Fleisher rings and Kayser-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.
Iron deposition
Copper deposition
Aluminum deposition
Molybdenum Deposition
Cornea and sclera