Asymmetry between the two eyes in children may be caused by blepharoplasty, underdevelopment of the eye muscles, etc. It may also be caused by pathologic factors such as strabismus. If a child’s eye muscles are not well developed, it may result in poorly coordinated movement of both eyes, leading to asymmetry between the two eyes. And if the child has heavy lids in one eye and single lids in the other, it can also make the patient’s eyes look bigger in one and smaller in the other, presenting an asymmetrical appearance. If the child has strabismus, the asymmetry is caused by the deviation of the eye position, such as internal strabismus, external strabismus, etc., the child’s eyes may be deviated inwardly or outwardly, and there may be photophobia, loss of visual acuity and other uncomfortable symptoms. It is recommended that patients with bilateral asymmetry and other discomforts should consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.