Cataract and the nodal point fallacy

Looking at research into posterior polar cataract and opacities elsewhere in the crystalline lens and poor vision.

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Introduction

It is sometimes stated that a posterior polar cataract has a greater effect on making vision poorer than opacities elsewhere in the crystalline lens because it is situated at the nodal point of the eye. Brown & Bron (1996) suggest that the cause is that the opacities are along the eye’s axis, rather than the relationship with the nodal point...

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