Strabismus may be associated with significant refractive errors, congenital abnormalities of extraocular muscle development, genetic factors, etc. 1. Obvious refractive error: When there is obvious farsightedness or nearsightedness that has not been corrected, farsighted patients will use too much eye adjustment in order to see near objects clearly, which triggers excessive collection reaction and causes the eyeballs to coalesce, thus leading to strabismus. Myopic patients will use less or no eye accommodation when looking at near objects, which will result in poorer accommodation response, leading to esotropia. 2. Congenital abnormal development of extraocular muscles: abnormal development of extraocular muscles may cause one or more muscles to be missing or thin, etc., which affects eye movement and leads to strabismus. 3. Genetic factors: there is a certain relationship between strabismus and heredity, and it is common to see multiple people in the same family suffering from common strabismus. If parents suffer from strabismus, their children are more likely to suffer from strabismus. When you have strabismus, you should consult a doctor in time and have the cause of the disease clarified by a professional doctor for targeted treatment.