Keratoconus with good unaided visual acuities: two case reports.

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.

CASE REPORTS: 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.

CONCLUSION: Good unaided visual acuities are not necessarily inconsistent with the diagnosis of KC.