Eyes a single eyelid and a double eyelid is mostly due to genetic factors caused by the normal situation, generally do not need special treatment, if it affects the aesthetics can choose double eyelid surgery. If there is a case of one eye with single eyelid and the other with double eyelid from birth, most of them belong to the normal genetic factors of individual differences without affecting the function of the eye can not be specially treated. Patients with this condition may also have a pathological condition called ptosis in one eye, which requires vigilance and prompt treatment with blepharoplasty or ptosis correction to avoid the abnormal visual experience that can lead to amblyopia. If you feel that the asymmetry of the eyelids is causing aesthetic discomfort, it is recommended that you visit a regular hospital to evaluate your condition and choose the appropriate treatment under the guidance of your doctor.