In general, internal strabismus is congenital, most of them are related to farsightedness, strabismus in one eye, in this case, it is recommended to go to the department to do a dilated optometry, after the optometry, if it is farsightedness, you can wear glasses to cover the eye that is not strabismus, most of the cases, after covering, some strabismus eyes can be corrected. Can not also be surgically corrected, this situation is very common, nowadays the children are particularly high, it is recommended to go to the regular ophthalmology strabismus specialty group consultation.