It is a surgical treatment for short-sightedness, some forms of long-sightedness and astigmatism and is carried out by ophthalmic surgeons. |
Typical aberrations that can impact imaging performance include astigmatism, chromatic aberration, and spherical aberration. |
As such, the anastigmat offers an attractive compromise between astigmatism and field curvature. |
Most refractive surgical procedures were developed to correct nearsightedness, farsightedness and astigmatism. |
Examining the camera we noted no astigmatism, curvature of field, rolling distortion, or pincushion distortion. |
The difference between the focusing powers of these two axes, measured in dioptres, is the astigmatism. |