Fleischer ring : seen in keratoconus. At the base of cone.
Hudson Stahli line : seen at the junction of middle and lower 1/3rd of cornea of aged persons (>50 years). Yellowish brown in colour, curves downward. Appears black in blue light.
Ferry line : seen around filtering bleb.
Stocker's line : seen in the body of pterygium.
Coat's white ring : subepithelial in location. Forms long after resolution of corneal iron ring due to corneal iron foreign body.
Iron deposition also occur around Salzmann nodules.
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