Research Article: Effects of Lens-Induced Astigmatism at Near and Far Distances
Introduction:
In the eye, astigmatism produces an alteration of the retinal image. This optical effect may be accompanied by blur, the visual sense of lack of sharpness. Some authors discussed that something may be special about the visual performances in cases of astigmatism. Indeed, they compared the effects of “simulated” and “real” spherical defocus on visual acuity (VA) and found that there were only minor differences, while real astigmatism reduced VA by only half compared to simulated astigmatism. In general, a…
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