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“A
Healthy Nation Needs A Healthy
Vision”
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94
Million Persons are
blind in India.
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254
People get blind every
minute in India .
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The following eye tests are not intended to replace an office visit. These are merely sample tests that you can do in your spare time to occasionally check your vision. If you notice any change over a period of time with any of these tests, please contact your Ophthalmologist for a check-up. |
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Vision Acuity
This is a sample Vision Acuity Eye Chart. This is what people commonly refer to as "20/20". The bottom line is set to calibrate the distance that you should stand from the chart. The normal distance is about 20ft, if the bottom line measures 100cm. If the calibration line is smaller than 100cm, use the following calculation to determine the proper distance: |
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Multiply the length of the calibration line by 2.40. |
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This is the distance in inches that you should stand from the chart. |
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Example: If the calibration line is 100 mm, then 100 X 2.40 = 240 inches, or 20 feet, or if the line is 95cm, then 95 x 2.40 = 228 inches, or 19 feet. |
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Click on the image for a printer-ready version.
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