Contact lenses. The irregularities in the curvature of the cornea can be addressed though customized contact lenses.
Astigmatism. Astigmatism is where the surface of the eye is peaked like a football, instead of being smooth like a soccerball. Uncorrected astigmatism causes straight lines to appear wavy. It may be corrected with glasses, contact lenses, or refractive surgery. For people with significant cataracts, it may be corrected with a toric implant.