| 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. |
| Corrective lenses such as contact lenses or glasses can usually correct vision in people with astigmatism. |
| Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism. |
