The magnitude of higher-order aberrations in normal subjects represents just a small fraction of the total aberrations of the eye. Lower-order aberrations — defocus and astigmatism — are ...
In general, patients will find 1 D or more of astigmatism to be significant, although some may find lesser amounts to be bothersome. One study suggests that as many as 20% of eyes with cataract ...
Even if you have only a small degree of keratoconus, don’t get LASIK surgery. Regular astigmatism is a common eye problem that can be corrected with glasses or contact lenses. When you have ...