4 doctors weighed in:

What sort of problem is astigmatism?

4 doctors weighed in
Dr. Andrew Shatz
Ophthalmology
3 doctors agree

In brief: Irregular shape

Astigmatism refers to a lens that is not perfectly round.
Our corneas and natural lenses appear round to the naked eye, but are in fact not perfectly circular (soccer ball shaped). The more football-shaped they are, the more astigmatism they have, and the more distorted things appear through them. Glasses and contact lenses correct for the astigmatism, removing the blur and distortion it causes.

In brief: Irregular shape

Astigmatism refers to a lens that is not perfectly round.
Our corneas and natural lenses appear round to the naked eye, but are in fact not perfectly circular (soccer ball shaped). The more football-shaped they are, the more astigmatism they have, and the more distorted things appear through them. Glasses and contact lenses correct for the astigmatism, removing the blur and distortion it causes.
Dr. Andrew Shatz
Dr. Andrew Shatz
Thank
Dr. Beth Friedland
Ophthalmology

In brief: Corneal shape

Astigmatism is a difference in the refractive power of the eye surface.
Usually the corneal surface is like a sphere, think beachball or basketball. With astigmatism the corneal surface is more like a football with different curves in each direction. You can get astigmatism from other structures, such as the lens, but this is much more rare.

In brief: Corneal shape

Astigmatism is a difference in the refractive power of the eye surface.
Usually the corneal surface is like a sphere, think beachball or basketball. With astigmatism the corneal surface is more like a football with different curves in each direction. You can get astigmatism from other structures, such as the lens, but this is much more rare.
Dr. Beth Friedland
Dr. Beth Friedland
Thank
Read more answers from doctors