Author Topic: How to check your Prescription/Snellen -- yourself.  (Read 932 times)

Offline OtisBrown

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How to check your Prescription/Snellen -- yourself.
« on: May 01, 2014, 10:07:54 AM »
Subject: I have seen a lot of bad prescriptions.

Item: Some are correct, some are excessive by -1 to -2 diopters.  But I (you) never know until you check yourself.

Here are some simple checks you should do for yourself - if you are working to pass the REQUIRED DMV, ro 20/40 line (both eyes open).

http://frauenfeldclinic.com/focal-calculator/calc.html

Just fill in the requested data. But always check your "cm" distance first.  Thus if I have a -2 diopter, "prescription", and my "just blur point" is at 50 cm (20 inches), then the two items match.

I would also included personal Snellen checking, because that is the FINAL test of success.

As always, I consider Dr. Alex's work to be excellent.  But success will always depend on what YOU DO - and no one can predict results on what you decide to do (or not do).