Big eyes and double eyelids is a common language people use to compliment people with pretty faces, but not all natural double eyelids look good, for example, some people have one single eye and one double eye. Some people have double eyelids in both eyes, but the width of the eyelid folds are not uniform. These conditions are collectively known as “large and small eyes”, which are extremely asymmetrical on the face. So how to improve the size of the eyes? There are two general causes of large and small eyes, one is fat pushing and the other is uneven strength of the levator muscle. In this case, the small eyes are usually due to the uneven width of the single eyelid or double eye crease formed by excessive fat pushing. In order to maintain the surgical result for a longer period of time, the full incision method is recommended. In this case, double eyelid surgery alone cannot solve the problem of large or small eyes. The frontalis muscle can be used to lift the drooping eyelid. Eyelid ptosis can be treated surgically either unilaterally or bilaterally, but the candidate needs to understand that it is unrealistic and difficult for the surgeon to achieve an absolutely uniform result in both eyes. Because ptosis involves the strength of your eye lifting muscles, the affected eye and the normal eye will have problems with eye size or incomplete eye closure when the surgery is first completed, and will gradually return to natural in about six months. Both eyelid surgery and upper eyelid ptosis surgery require an experienced plastic surgeon to perform the surgery. It is only between surgeries that you can grasp the scale of treatment and achieve the best surgical results. Be sure to choose a regular institution with an experienced surgeon!