Need. The reasons for this are as follows: 1. The need to improve appearance: The change in appearance brought about by “strabismus” often affects others’ perception of oneself, especially in job interviews and social interactions. A pair of gleaming eyes usually gives people a sense of confidence, competence and energy, while a pair of squinting eyes will often lead to misunderstandings. “Talking to me, why don’t you look at me?” The person is not even looking at me, what’s on his mind? “This person has no god in his eyes, probably because he has no self-confidence.” One 65-year-old woman was talking about the reason she had the surgery: her grandson disliked her strabismic appearance and refused to let his grandmother take him to kindergarten for fear that children would laugh at her. Therefore, from the perspective of improving appearance and enhancing social interaction, adults with strabismus should also undergo surgery. 2. The need to eliminate double vision and improve the quality of life: Some adults’ strabismus is caused by nerve paralysis due to some diseases or trauma or surgery, which does not affect the appearance much, but symptoms such as “double vision, inability to focus and blurred vision” seriously affect the patients’ work, life and study. However, symptoms such as “double vision, inability to focus and blurred vision” seriously affect the work, life and study of patients. Generally, if the degree of strabismus is less than 10 trigeminal degrees, you can consider conservative treatment with trigeminal lenses, but if the degree of strabismus is larger, it can only be solved by surgery. 3, the need to establish binocular vision and restore stereo vision function: some adults with strabismus occur at a later age and can restore stereo vision after strabismus surgery despite the large strabismus degree.