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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 ...

February, 2020- February, 2020- All Eyes On 2020! Focusing On Future Eye Care Professionals!


All Eyes On 2020! Focusing On Future Eye Care Professionals!

Precision Vision is committed to making a difference to University Professors & Students in Vision Related Studies.

Students with Nicole Ross, Associate Professor of Optometry at New England College of Optometry enjoy using the conversion card generously provided by Precision Vision, Inc.

“The Precision Vision Contrast and Visual Acuity Conversion Cards have enhanced the students’ academic and clinical experience at the New England College of Optometry (NECO). The outlined format of the visual impairment categories, Snellen to logMAR acuity conversion, and Weber contrast to logCS conversion are well-organized. During the low vision course training at NECO students utilize a variety of electronic contrast sensitivity tests. The conversion of those contrast results back into logCS units have been greatly appreciated when outlined in this portable card. The Conversion Cards received positive feedback from students and faculty. It will be a useful tool for students to quickly reference as they continue their training in low vision.”

~ Jeffrey Ho, OD, FAAO, Assistant Professor of Clinical Optometry,
New England College of Optometry

Precision Vision, Inc offers every customer clinically tested products, continual innovation and unparalleled support. In the month of February, we will also offer a complimentary Conversion Card with every purchase. Quickly convert contrast values, ICD-9 and ICD-10 vision loss reporting values, as well as world-wide notations with this handy pocket card.


Precision Vision, Inc has proudly collaborated with Dr. Colenbrander on many of our projects, including those which you
see here.

For 25 years Dr. Colenbrander directed the Vision Rehabilitation service at California Pacific Medical Center. He was a founding board member of the International Society for Low Vision Research and Rehabilitation and represented the specialty of Vision Rehabilitation on the Advisory Committee of the International Council of Ophthalmology. Dr. Colenbrander’s developed many of simple screening tools for early detection of vision problems you see within the Precision Vision product line.


Introduction to Visual Acuity Measurement
– by August Colenbrander, MD
This introduction has been utilized in University curriculum and is meant to provide some guidance. It is divided into several sections which cover everything from low & functional vision to pediatrics to contrast acuity. Click the link below to read more.


Each issue we will take a look at some of the most frequently asked questions that we receive and feature a Q & A below!

Q: What is Normal Vision?

A: “Normal” visual acuity for healthy eyes is one or two lines better than 20/20. In population samples the average acuity does not drop to the 20/20 level until age 60 or 70. Always remember that the 20/20 reference standard does not refer to the average acuity of American eyes, just as the US standard foot is defined independently of the “normal” length of American feet.