Astigmatism causes vision to be blurred or slightly distorted at all distances. It occurs when the cornea is shaped more like a football than a sphere, so light focuses at multiple points instead of a single sharp point on the retina.
Astigmatism frequently occurs together with myopia or hyperopia, and is corrected with cyl/axis (toric) lenses that compensate for the uneven curvature of the cornea.
Key facts
- Blurred or slightly distorted vision at all distances.
- Caused by a football-shaped (non-spherical) cornea.
- Corrected with cyl/axis (toric) lenses.
- Often occurs together with myopia or hyperopia.
