Features 1. may be accompanied by internal or external strabismus, or superior strabismus, etc.; 2. may form eccentric gaze, resulting in visual acuity below 0.2 and becoming refractory amblyopia; 3. may be accompanied by stereopsis dysfunction; 4. may lead to easy recurrence after strabismus surgery. Treatment principles Different types of strabismus are treated in different ways. 1.Bilateral alternating strabismus with internal or external strabismus: its amblyopia is generally mild and the treatment is the same as conventional. 2.Strabismus with central gaze: After the better eye is cured as a priority, the good eye is covered and treated with a compound amblyopia instrument of three generations or more. 3, strabismus with eccentric gaze: cover the good eye, cure the strabismus, and correct the eccentric gaze with more color coding (preferably moving color coding such as sensitivity color coding, light brush, etc.) function. Use the auxiliary mirror + perspective magnification threshold vision marker (customized, the third generation to have this function). 4.High hyperopia with internal strabismus: try to wear full hyperopia corrective lenses for 3 months, if the strabismus can be completely corrected, gradually reduce the number of hyperopia, while amblyopia treatment. Regular prescription, priority treatment of the good eye, when the good eye is cured before covering the good eye for strabismus. Make sure that at least one eye has a visual acuity of 1.0 or higher in the healthy eye and