Optotype: Visual board for testing eyesight

Published on January 21, 2015

An Optotype is a visual board for testing visual sharpness. The inventor of the Optotype was the Dutch ophthalmologist Herman Snellen who made the first visible table in 1862. Here you can download your Optotype (Eye chart) for free. This Optotype can be printed on a regular A4 printer and then you should measure whether the uppercase letter E is around 31mm high. If it is, then it means that you have printed it correctly and that Eye Chart can be used to measure the quality of your vision.

After printing it, affix the Optotype at eye level, preferably on a white wall that has good lighting and where you can step a few meters away from it.

A person who has perfect eyesight will be able to read the sixth row (marked with 6m at the right side) from a distance of up to 6 meters. Beside each row (on the right,) it is displayed from how far a person who has perfect eyesight can read the line.

If for example, you can read the sixth row (which is marked with 6m) from a distance of 3 meters, this means that you have 50% of normal vision. To get this number, you need to divide your distance in meters from the visual table with the number that is indicated beside the smallest line you can see and the resulting number multiply by 100 to get the percentage!

So, 3m (your distance from the visual table) / 6m (smallest line you see in the distance is marked with 6m). The result is 0.5 x 100 = 50%.

To test the enhancement of your vision while performing the exercises, it is necessary to note the quality of your vision before you start exercising, and continue to track your progress every month. For this purpose, test your vision by standing at a distance from the visual table where you can recognize the first two or three rows. Measure and record the distance from the visual board, and after a month of exercise, repeat this test to see from how much further distance you can recognize the first two or three rows.

It is understandable that people with high dioptre have to stand very close to the Optotype, while a person with a small dioptre can go much further away.

Testing your eyesight once a month is also very important to maintain the motivation needed to persist in the exercises until your vision is fully repaired!

For schedule i.e. exercise program and a detailed explanation of all the necessary exercises, consult the program “How to Improve Eyesight“

One response to “Optotype: Visual board for testing eyesight”

1. How is Visual Acuity Determined and what steps are taken? | World Magazined says:

   April 1, 2015 at 4:12 pm

   […] doctor would first of all make you sit before a visual board for testing eyesight. You will be able to notice a letters, numbers or geometric symbols that are specially made for the […]