People who are suitable for and are not suitable for inner canthus opening Guidelines for inner canthus opening

Canthoplasty is a very common plastic surgery nowadays. Many friends who love beauty will choose to have their inner canthoplasty done in order to make their eyes bigger and rounder. Although canthoplasty is relatively common, it is not suitable for everyone.

Adapt to the crowd

1. Those who have small eyes and hope to correct them through plastic surgery.

2. Patients with severe epicanthus or deformities in adjacent parts.

Taboo group

1. People who are mentally abnormal or have psychological disorders, lack self-awareness of their own conditions, blindly pursue unrealistic double eyelid shapes, have severe scar constitutions, or have abnormal coagulation mechanisms should inform their doctors in advance.

2. Congenital amblyopia, acute or chronic infections of the inner or outer eye or around the eye that have not been controlled or healed.

3. Patients with facial paralysis and incomplete palpebral fissure closure, or those with infectious diseases inside or outside the eyes, should be cured first before undergoing canthoplasty surgery.

4. For those whose eyeballs are too protruding, too sunken or whose eyelids are retracted due to various reasons, and for those who know that canthoplasty surgery will not achieve the desired results, they should be treated with caution.

However, there is a common criterion for whether or not the canthoplasty is appropriate. Medical cosmetic surgery generally regards the three-court and five-eye view of traditional Chinese human aesthetics as beauty. If the eyes basically meet the three-court and five-eye view, there is no need to open the inner canthus excessively, so as to avoid disfigurement instead of beauty. The three-court and five-eye view means that the width of the palpebral fissure, the distance between the inner canthus, and the distance from the outer canthus to the ear should be roughly equal, and the width of the palpebral fissure is equivalent to the width of the nose wing. A good-looking canthus should roughly meet the following data:

(1) The distance between the inner canthus of the two eyes is about 33.6mm for men and about 32.8mm for women

(2) The distance between the outer canthi of the two eyes is about 90.7mm for men and about 86.7mm for women

(3) The medial canthal palpebral fissure angle is 45°, and the lateral canthal palpebral fissure angle is 60°-70°

Although we cannot say for sure which method is the best for opening the inner canthus, we can tell you that the most commonly used method in cosmetic outpatient surgery is the inner canthus skin "Z" reshaping, which is relatively simple, with few incisions, and is suitable for all degrees of inner canthus folds. When suturing the incision, the doctor will try to choose non-invasive 6-0 or 7-0 nylon sutures to reduce incision scars.

1. Inner canthus skin excision method to open the inner canthus

Suitable for people: This method is better for patients with small-scale epicanthus.

Specific method: The method is to simply remove the excess skin at the medial canthus, peel it off slightly, pull the medial canthus skin toward the back of the nose, expose the medial canthus angle, and then suture the skin.

This surgical method is not very effective and is rarely used nowadays.

2. “YV” suture method for opening the inner canthus

Suitable for people: This method is more suitable for patients with mild epicanthus.

Specific method: The method is to make a horizontal "Y"-shaped incision at the inner canthus, the size of which is determined as needed, and the upper and lower widths should generally be larger than the palpebral fissure. The skin is pulled toward the nose and sutured, and the wound surface is in a horizontal "V" shape after suturing.

3. Blair-Brown method for canthoplasty

Suitable for people: This method is more suitable for patients with larger epicanthus.

Specific method: The method is to make an incision at the medial canthus, peel it into two triangular skin flaps, deep to the medial canthal ligament, suture the medial canthal ligament close to the nose, pull the two flap tips toward the nose, suture them at the top of the transverse incision, and finally suture the skin wound edges in turn to form an "∈" shape.

4. Hiraga method to open the inner canthus

Suitable for people: This method is more suitable for patients with epicanthus.

Specific method: The specific operation method is to make a “>” shaped incision at the inner canthus, peel off the skin flap, fix a stitch at the inner canthus, and loosen the skin. The protruding skin above and below the canthus point is removed and then sutured into a “<” shape.

5. "Z" canthoplasty

Suitable for people: This method is more suitable for patients with various epicanthus.

Specific method: The specific operation is to make a "Z"-shaped incision at the inner canthus, peel off the subcutaneous tissue around the incision, make two triangular skin flaps, swap the two flaps, and suture the skin wound edges. Currently, there are many specific surgical methods in clinical practice. Generally, different "Z" shaping surgical methods are adopted according to the different conditions of the patients.

6. Four-flap surgery (Mustarde method) to open the inner canthus

Suitable for people: This method is more suitable for patients with inverted type, epicanthus, widened inner canthus distance, small palpebral fissure and ptosis.

Specific method: The specific operation is to make four flaps at the inner canthus, exchange their positions and then suture them.

7. Speat flap correction for epicanthoplasty

Suitable for people: This method is more suitable for people with epicanthus and mild ectropion.

Specific method: The method is to make a tongue-shaped skin flap on the inner side of the upper eyelid at the inner canthus, and after peeling it off, rotate it and move it to the skin defect area of ​​the lower eyelid, and suture the wound edge.