Understanding Optometry

Following the unexpected results of last month’s eye test, and my optometrist’s suggestion that the remarkable, and continuing improvement in my eyesight and visual perception, which are among the most precious gifts of My Serrapeptase Adventure, would make an interesting subject for research, I contacted The Institute of Optometry.

Today, I received a reply to some of my questions. Although The Institute is not able to offer specific advice about my condition or to comment upon the details of my adventure, the information I have received does include some very useful recommendations for further reading.

Thankfully, the information I have received includes a detailed explanation of two widely used measures of distance visual acuity: The Snellen Chart and notation, most used in the UK and The LogMar Chart and notation, most used in North America.

The advantage of The LogMar (logarithm of the minimum angle of resolution) rather than the traditional Snellen notation is that LogMar allows analysis of visual acuity scores more effectively and comparisons of results more precisely. It offers this because the equal linear steps of the LogMar scale represent equal ratios in the standard size sequence. Unfortunately, from all that I have managed to read, so far, the conversion of all the Snellen scores, which I have been given, to LogMar variations, may not be the easiest thing to do.

I am determined to learn to make the conversions. Once I have mastered the mathematics, I am sure that it will be much easier to describe the measurable improvements in my visual acuity in a way that makes sense in the context of everyday experiences. I am still hopeful that I will be able to find an equally logical scale, which can be used to interpret near acuity results.

I am still looking for an opportunity to learn more about the processes and impact of visual perception upon the way I can now see and understand the world around me.


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