The best way to solve the problem of small eyes is to perform double eyelid surgery, which usually makes the eyes 1-2mm larger and can make one’s eyes appear larger than they really are. Alternatively, the eyes can be made larger by enlarging the inner and outer canthus. There is also a condition called ptosis, which is corrected in other ways. This is divided into inner and outer canthus enlargement. The purpose of external canthoplasty is to permanently enlarge the eyelid fissure to correct smaller-than-normal eyelid fissures, such as small eyelid fissure syndrome or eyelid margin adhesions due to trauma and ocular disorders and inflammation of the lid margins. Von-Ammon canthoplasty Under local anesthesia, the outer canthus is incised, and the length of the incision is according to the degree of enlargement of the eyelid fissure. Blunt-tipped scissors are inserted through the incision, and the bulbar conjunctiva is submerged and peeled off. Both the upper and lower parts are peeled to reach the dome, and the peeling should include the entire outer canthus, so that the conjunctiva is sufficiently loosened that it can be pulled to the outer canthus incision without tension. The temporal tip of the bulbar conjunctiva is sutured to the tip of the canthus incision, and the rest of the upper and lower lid margins are sutured intermittently, stitch by stitch. And with the lateral conjunctiva for a mattress suture, dedication from the new canthus conjunctiva into the needle, from the canthus about 4-5cm from the skin lead, pad a small oil gauze after ligation, in order to form a new lateral vault, 5-7 days after surgery to remove the stitches. The disadvantage of this method is that the curvature of the outer upper and lower lid margins needs to be rested during the operation, and the length of the lid opening is shorter than that of the design due to the partial retraction of the conjunctiva after the operation. Second, Fox canthoplasty in the actual outer canthus point fixed point Aa, the new outer canthus fixed point b, point b from the actual outer canthus 4 ~ 6cm. because the outer canthus over-expanded, open most of the no eyelashes, and the conjunctiva forced to pull outward with the skin suture, will make the outer dome disappeared,, pink conjunctiva exposed with the eyelid margins, damage to the appearance appearance of the face. Along the curvature of the upper eyelid margin down about 4mm for point c, connecting Aac and point b, in the upper eyelid margin outside 1/4 out split eyelid into front and back two lobes, the incision will be extended downward, incision Aa and bc fully peeled, but can not exceed the new outer canthus point b. Inner corner of the eye widening: inner canthus refers to the inner corner of the eye there is an extra, connecting the upper and lower eyelid skin fold, so that the corner of the eye is a sharp angle, giving the person a kind of narrowing of the eyelid crack feeling. It is a characteristic of the Mongolian race, which means that most people in our country have varying degrees of medial canthus. Clinically, we categorize it into simple medial canthus and complex medial canthus. In the former case, there is only inner canthus, slightly narrowing of the eyelid, single eyelid or inner double, without other deformities; in the latter case, there is obvious narrowing of the eyelid, thickening of the eyelid skin and subcutaneous tissues, orbicularis oculi muscle dysplasia, short and narrow eyelid, and often drooping eyelid (the eyes don’t open much). The purpose of correcting the medial canthus is to remove the skin folds at the inner corner of the eye, reveal the lake of tears and increase the size of the eyelid. Surgery is only required if the simple medial canthus is still evident after puberty. We usually perform blepharoplasty at the same time as the inner canthus enlargement, and in mild cases, the skin incision can be closed directly after cutting open the redundant skin, while in more severe cases, a “Z” reshaping operation should be performed. Although the latter may leave a 0.5cm long incision line on the skin of the inner canthus, the eye crack that is widened by the surgery will add a lot of color to the eyes. The treatment of complicated medial canthus should depend on the severity of the local deformity. If the medial canthus is mild and the eyelid is well developed, the medial canthus can be enlarged at the same time as the ptosis is corrected and blepharoplasty is performed. Conversely, the medial canthus should be enlarged first, and ptosis correction and blepharoplasty should be performed after an interval of several weeks. Because of the severity of the medial canthus deformity in the latter case, we generally use the Mohs’ method (i.e., Y-V advancement plus double Z reshaping). The age of treatment is usually after 6 years of age. Too late can result in secondary conditions such as strabismus, amblyopia or myopia due to ptosis. When correcting the medial canthus, the surgical level should be: 1. clear. Because of the delicate anatomy of the medial canthus, failure to familiarize oneself with them may inadvertently disrupt many important anatomical structures and lead to irreparable complications, such as rupture of the lacrimal duct. 2.The local skin looks much, but in reality it is not much, so you should try not to remove the skin tissue during surgery. 3.Surgery can be overkill. 4, and blepharoplasty at the same time, should pay attention to canthus correction, the upper eyelid skin position changes.