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The Effect of Correcting Small Astigmatisms on Visual Acuity


Astigmatism has a significant degrading impact on visual performance when larger than around 0.5 D. However the effect of smaller values of astigmatism, and its correction, on visual acuity is still controversial. In this context, we performed new experiments using wave–front sensing technology to study the influence on visual acuity (VA) of correcting astigmatism smaller than 0.5 D.

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