title: Corneal ectasias: study cohorts and epidemiology.
authors.forename: Alexander
authors.initials: A
authors.lastname: Bialasiewicz
authors.forename: Deepak P
authors.initials: DP
authors.lastname: Edward
mesh_terms: D015331:Cohort Studies; D003315:Cornea / Q000473:pathology*; D004108:Dilatation, Pathologic / Q000453:epidemiology / Q000235:genetics; D006801:Humans; D007640:Keratoconus / Q000453:epidemiology* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D008877:Middle East / Q000453:epidemiology