Patient’s description (onset time, main symptoms, hospital visited, etc.): The right eye was found to have crossed eyes at the age of one, and was treated at the age of three at the Second People’s Hospital of Foshan. Pang Lin, Strabismus and Pediatric Ophthalmology Department, Peking University First Hospital: The most important thing to determine is whether the internal strabismus is caused by hyperopia. Regulated internal strabismus cannot be treated without glasses or with unsuitable glasses prescription, and even surgery cannot achieve the purpose of treatment. According to the above information, we feel that there is a big difference between the results of several optometric examinations, so we should first adjust the prescription of glasses and insist on wearing glasses strictly for more than 3 months before seeing the effect. Even if surgery is needed, it should be done after the basic cure of amblyopia.