Nystagmus is an abnormal movement of the eye due to some visual, neurological or vestibular lesion. Nystagmus is not under voluntary control and has a certain rhythm. Depending on the form, frequency, and period of the nystagmus, it can be classified as impulsive, pendulum, horizontal, vertical, rotational, congenital, acquired, and so on. To date, there is no direct treatment for nystagmus, but only some indirect treatments to improve the symptoms. After going to the hospital for examination to confirm the type of nystagmus, the following treatment measures are possible: 1. Refractive correction: After paralysis of the ciliary muscle for optometry, if there is significant refractive error, it is best to wear glasses for correction. 2, Trigonometry: Using the congenital motor nystagmus in the resting eye position or when subjected to collection, the nystagmus can be reduced or inhibited by wearing trigonometry. To eliminate compensatory head position and improve visual acuity. There can be isotropic and anisotropic trigonometry. 3.Surgical treatment: For patients with congenital nystagmus with compensatory head position, surgery can improve or eliminate compensatory head position and improve visual acuity by moving the stationary eye position from lateral to central, but it is not curable. However, it cannot be cured. The need for surgery should be determined by a trigonometry test before surgery. Nystagmus is a complex eye disease that requires a clear diagnosis of the type of nystagmus and then treatment measures to relieve it.