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#Visual Acuity
December 6, 2021

What is Visual Acuity?

Visual acuity refers to the clarity or clearness of the vision, a measure of how well a person sees. The ...

EyeOnVision August, 2021 – Blind Cricket


It all started over a game of cricket, blind cricket that is.

The greatest development in the field of low vision assessment in decades was a direct result of observing an international competition for blind cricketers.

In October 2008, one of the world’s leading pioneers in the field of vision testing and research was invited to a meeting in England to discuss the vision standards being applied by the World Blind Cricket Council (WBCC). Dr. Ian L. Bailey accepted the invitation, which opened the door to this breakthrough in low vision testing.


Assessment and Rehabilitation are critical to those who suffer from Low Vision and can help them learn how to stay independent and make the most of their sight. A diagnosis and eventual rehab can help your patients with low vision live full, active lives.

Browse through our highly standardized vision tests which cover the vast array of Low Vision assessment tools found exclusively at Precision Vision.


Q: With Sloan being such a popular optotype, why did you choose Tumbling E for the BRVT?

A: While Sloan letters are the most favored optotypes for logMAR charts, it would be cumbersome to use isolated Sloan letters. This would require 10 different letters at each size level. For Landolt Rings and Tumbling E’s only one optotype is required at each size level and they can be rotated to give different orientations (usually 4) that the patient is required to identify. The Landolt Rings and the Tumbling E’s are familiar and well-accepted optotypes. We consider that the Tumbling E is the better choice of the two because it is a more complex target. 

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