Visual function declines as a result of the irregular corneal shape, resulting in astigmatism, and causing a distortion in vision. Deterioration can become severe over time.
Pellucid marginal degeneration
Keratoconus
Optic disc drusen
Posterior cortical atrophy
Vitreomacular adhesion
Geographic atrophy
Enlarged vestibular aqueduct
Choroidal neovascularization