Abstract
Correction of ametropia with common eye glasses brings always on a difference in size between the blurred image on the retina in the uncorrected eye and the sharp one in the corrected eye. It increases with the distance between the correcting lens and the cornea. It is smaller when the ametropia depends on deviation from the normal of the refractive power of the lens than if it depends on the refractive power of the cornea or the length of the axis of the eye. This phenomenon brings on aniseiconia at the correction of anisometropia and explains the discomfort often produced at the correction of anisometropia and astigmatism.
Full Text
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