Don't move your eyes randomly

Eye movement disorders can be divided into synergistic movement disorders and eye movement disorders caused by paralysis of extraocular muscles. When the normal eyeball is turned inward, the inner edge of the pupil can reach a straight line connecting the upper and lower small punctum, and when the eyeball is turned outward, the cornea can reach the outer corner, and the range of upward and downward movement is about 5rnm. If you can't reach the above range, it is eye movement disorder.