title: Keratoconus: it is hard to define, but ...
authors.forename: Michael W
authors.initials: MW
authors.lastname: Belin
authors.forename: Stephen S
authors.initials: SS
authors.lastname: Khachikian
mesh_terms: D003315:Cornea / Q000473:pathology*; D019781:Corneal Topography; D006801:Humans; D007640:Keratoconus / Q000145:classification / Q000175:diagnosis*