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Don't Stop Learning!

Tables for Visual Acuity Conversion

In this article you will find tables for converting between different visual acuity notations commonly used in clinical practice or scientific research. Please use always standard ETDRS charts and logMAR notation.

Optimum Distance to measure a Defocus Curve

It is important to take into account that changing optotype size is not the same that correcting vergence by proximal distance. This is a concept that generates confusion as we have seen in many of the courses we have conducted about Defocus Curves.

Preparing the lenses to measure a Defocus Curve

In this article we will explain the lens preparation procedure to be carried out before starting to measure a Defocus Curve, in general with any test, and in particular with the Multifocal Lens Analyzer PRO (MLA).