Asymmetry between the two eyes may be caused by strabismus, double eyelid asymmetry or ptosis, which can be treated by surgery or prescription lenses to improve the appearance. 1. Strabismus: Strabismus patients may have asymmetry between the eyes due to deviation of the eye position. If the patient is suffering from adjustable internal strabismus, the patient can correct the refractive error through the prescription of glasses so as to balance the eye position. If the patient is non-adjustable strabismus and the degree of strabismus is large, the patient can have surgical treatment for strabismus, such as internal rectus muscle weakening surgery. 2. Double eyelid asymmetry: If a patient has a single eyelid in one eye and a double eyelid in the other eye, which can lead to asymmetry between the two eyes, the patient can undergo double blepharoplasty on the eye with a single eyelid to make the eyelids symmetrical on both sides. 3. Ptosis: If a patient has ptosis in one eye, resulting in asymmetry of the eyes, the patient can undergo ptosis correction surgery to improve the appearance. It is recommended that patients with asymmetry in both eyes seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.