The eye spacing is generally the length of one eye and can be determined by measuring it with an instrument. Eye spacing is the distance between a person’s two eyes, i.e., the distance between the inner canthus of the two eyes, which is generally equivalent to the length of an eye fissure, i.e., the straight line distance from the inner canthus to the outer canthus of one eye. There is no strict clinical standard for eye spacing, because each person’s growth and development is different, and the size of the skull is different, the length of the eye spacing will be different, generally using the length of one eye fissure as a reference. Eye spacing also has a certain genetic factor, as long as the length of the eye spacing does not affect the physiological function of the eye, has little effect on the aesthetic impact, and has no impact on normal life, there is no need to go too far to intervene. Specific eye spacing judgment can go to the hospital to consult a professional doctor, if you are not satisfied with their own eye spacing, according to the doctor’s advice for the next step in the treatment.