Etiological treatment Symptomatic treatment. To improve visual acuity In ocular nystagmus, the focus is on improving visual acuity, primarily by treating the primary cause. For patients with congenital idiopathic nystagmus, moderate trigeminal lenses can improve visual acuity and eliminate abnormal head positions. For example, wearing bottom-out trigeminal lenses in both eyes can reduce nystagmus and improve visual acuity by stimulating vergence. For jumping nystagmus, trigeminal lenses with the base to the fast side can not only improve visual acuity, but also correct compensatory head position. For patients with abnormal head position, when wearing a tricorder, the bottom of the tricorder should face the turning side of the face and the tip of the tricorder should point to the turning side of the eye. As for the degree of the trigeminal lens, a pressed trigeminal lens can be used to fit up to 30 trigeminal degrees per eye. Appropriate tricorders can also be fitted to eliminate compensatory head position and improve the vision in the original position. Surgical treatment for congenital impulsive type: surgery can be performed to correct the compensatory head position according to the “intermediate band” eye position, transform the eye position, reduce nystagmus, and improve visual acuity. As the group of extraocular muscles on the slow-phase side is strong, the group of extraocular muscles on the fast-phase side is weak. For this reason, the two extraocular muscles on the slow-phase side can be backed off to reduce their tension and balance with the extraocular muscles on the fast-phase side. The “middle band” eye position is shifted from the second and third eye gaze position to the original gaze position directly in front of the eye. If the left side is the middle band, the left external rectus muscle can be moved back 7mm and the right internal rectus muscle can be moved back 5mm, the left internal rectus muscle can be shortened 6mm and the right external rectus muscle can be shortened 8mm, so that the resting eye position can be shifted to the front.