This is a simple way to self-examine for macular degeneration and you are welcome to download the Amsler form. Of course, there is more accurate OCT examination in the clinic now. 1.Checking steps: 1.Place the Amsler table at a distance of 30 cm from the horizon, the light should be clear and average 2.If you have presbyopia or myopia, you should wear the original glasses for the test 3.Cover the left eye with your hand, and gaze at the black spot in the center of the Amsler table with your right eye 4.Repeat steps 1-3 to check the left eye Amsler table (each small cell of the standard Amsler table is 5mm×5mm) Under normal circumstances, you can see that the lines of the table are straight and each small cell is square, but in the following cases, you need to find an ophthalmologist for detailed examination as soon as possible. 1.It is found that the lines are uneven or the grid is not square 2.Some grids are particularly tight 3.Some grids are irregularly enlarged 4.Some grids have a mist in front of the lines as if they are blocked and cannot be seen clearly or disappear 5.Some grids have straight lines turned into curves