1. Wear your reading glasses while doing this test.

2. Cover one eye.

3. Look at the center dot and keep your vision on the center at
    all times.

4. While looking directly at the center and only the center, be
    sure that all the lines are straight and all the small squares
    are the same size.

5. If you should notice any area on the Grid that becomes
    distorted, blurred, discolored or otherwise abnormal,
    call your doctor.

6. Test the other eye in the same manner.