title: Keratoconus with good unaided visual acuities: two case reports.
abstract: BACKGROUND
  Ophthalmic evaluation of patients with keratoconus (KC) often reveals highly myopic and irregular astigmatic refractive corrections. Irregular corneal astigmatism and central corneal scarring in patients with KC often result in a loss of best-corrected spectacle acuity. Rigid gaspermeable contact lenses generally optimize visual acuities for patients with KC.
  
  
  METHODS
  Two cases are discussed of patients who manifested clinically diagnosed KC but unusually good unaided Snellen visual acuities (20/25+ or better) in both eyes.
  
  
  CONCLUSIONS
  Good unaided visual acuities are not necessarily inconsistent with the diagnosis of KC.
authors.affiliation: Jules Stein Eye Institute, Department of Ophthalmology, UCLA School of Medicine, USA.
authors.forename: L M
authors.initials: LM
authors.lastname: Johnson
authors.forename: B A
authors.initials: BA
authors.lastname: Weissman
mesh_terms: D000328:Adult; D003261:Contact Lenses; D003315:Cornea / Q000473:pathology / Q000503:physiopathology*; D019781:Corneal Topography; D005260:Female; D006801:Humans; D007640:Keratoconus / Q000473:pathology / Q000503:physiopathology* / Q000534:rehabilitation; D008297:Male; D014792:Visual Acuity / Q000502:physiology*