Eye Diseases

 Instructions:

1. Test one eye at a time.

2. Wear glasses or contact lenses if usually worn.

To work out the distance you are required to stand back from your monitor you will need to follow the steps below:

        1. Measure the height of letter A given below, on your monitor, in millimetres and divide by 88.
        2. Take the value from step 1 and multiply by 6.
        3. The value from step 2 is the distance you need to stand from your monitor in metres.

If you are able to read upto UAZNFDT your vision is 6/6 or 20/20 which is perfect 100% vision.If you are not able to read upto UAZNFDT then you need furthur evaluation.For furthur evaluation click here

Instructions:

1. Test one eye at a time.

2. Wear glasses or contact lenses if usually worn.

3. Do the tests in a well-lit area.

4. Do not squint, relax your eyes.

5. Place your face about 3 feets straight from your screen.

In the astigmatism chart given below, check if any of the lines appear darker than others with each eye. If you answer is yes for either or both the eyes, then you probably have astigmatism.For furthur evaluation click here

Instructions:

1. Test one eye at a time by covering one eye and try to read the numbers given below.

2. Wear glasses or contact lenses if usually worn.

3. Do the tests in a well-lit area.

4.The interpretation is given below.   

Instructions:

Position yourself at about 14-16 inches (about 40 cm) away from the figure given below.

If you have glasses that you use to read with – make sure you are looking thru the reading part of your glasses

Cover the left eye and use only your right eye to see the figure.

Stare at the white dot in the center of the grid with your uncovered eye. Keep your eye focused on the dot.  Don’t move your eyes around to see any other part of the grid except for the white dot.  Use your side vision (peripheral vision) to see all the other parts of the grid.  “Glue” your sight to that white dot.Dont move your eye around it at all.

While staring at the white dot:

• Can you see all 4 corners of the grid?
• Can you see all 4 sides of the grid?
• Are any of the lines WAVY or MISSING or DISTORTED?   (All lines should look perfectly straight, all intersections should form right angles and all the squares should be the same size.)
• Are there any holes or “missing areas” in  the grid?

Then cover the right eye and repeat the steps using the left eye to see the figure.If your answer to the first two questions is no and the answer to the last two questions is yes, then you may be having a disease of the macula.For furthur evaluation click here