Mild strabismus refers to microscopic strabismus, which means that when one eye is injected with the target, the other eye is injected in a direction that deviates from the target, and the strabismus angle is less than ten trigeminal degrees; such patients often have difficulty reading. Refractive correction or surgery is the treatment of choice. Surgery can be used to correct amblyopia that has been cured or basically cured, but still has tiny degrees of strabismus, or strabismus with small residual degrees after surgery, and can be corrected with a muscle marginal incision, but must be carefully observed with a trigeminal test after surgery to avoid overcorrection. Other treatment options may include corneal contact lenses or imaging lenses for correction and, if accompanied by amblyopia, monocular masking to enhance visual acuity with gradual reduction, or treatment with posterior image or red light scintillation to eliminate paracentral gaze.