Test comes in 2 parts.
Part 1: test your RIGHT eye. Please gently cover your LEFT eye.
Part 2: test your LEFT eye. Please gently cover your RIGHT eye.
A reminder will be shown when you are required to switch eye.
The reminder will look like this:

If you use reading glasses, please put them on as usual.

Distance yourself 10 inches from the screen in a evenly lit room. This is the same disance as putting 1 pieces of legal size paper in LENGTH like the following:

Keep your eye sight right in front of the amsler grid and look at the white dot at the center.

Click on the Yes, I see distortion button if you see any distortion (wavy, dim, irregular or fuzzy) on the grid. Then select the area(s) of distortion.
Click on the No, looks normal button IF you cannot find any distortion or irregular line/box in the grid