The size of the eyes may be caused by fat accumulation or by uneven strength of the levator muscles, which can be improved by double eyelid surgery, or by ptosis correction surgery. If the fat in the eyelid area is unevenly distributed, it will easily cause the eyelids on both sides to be different in shape, or to form a single eyelid on one side and a double eyelid on the other side, or to have double eyelids of different thicknesses and folds on both sides. In this case, the size of the eyes can be corrected by double eyelid surgery by removing the excess fat and flabby skin on both sides of the eyelids. If ptosis occurs on one or both eyelids, it not only interferes with normal vision, but also tends to cause large or small eyes. Ptosis surgery can be performed by removing excess tissue from the upper eyelid, allowing the eyelid to lift up and restore the shape of the eyes, improving the appearance of large or small eyes. If you have large or small eyes, it is recommended that you go to a regular hospital for a checkup to clarify your condition and then work with your physician for targeted treatment, so that you do not miss out on your condition, which can cause other eye problems.