Blurred vision and unsteady walking in a 10 year old child can be caused by a variety of reasons, such as refractive error, amblyopia, congenital cataracts, fundus lesions, etc. It is necessary to go to the ophthalmology department of the hospital for an examination before the doctor can diagnose the specific cause. Under normal circumstances, a 10-year-old child’s visual acuity should have reached 1.0, the same as a normal person of the same age, and the current blurred vision and unsteady walking indicate a serious visual defect, which cannot be accurately determined based on the symptoms alone. The child should be accompanied by parents to the hospital ophthalmology department for examination, usually the doctor needs to do slit lamp microscopy, visual acuity examination, optometry examination, fundus examination, etc. to make a clear diagnosis, the common causes are refractive error, amblyopia, congenital cataracts, fundus lesions and so on. Only after a clear diagnosis can further targeted treatment be taken to promote vision improvement as much as possible.