Measurement method and aesthetic proportion of inner canthus surgery

A skin fold appearing in the inner canthus of epicanthus, which goes straight from top to bottom or flips from bottom to top. Epicanthal epicanthus is more common in eastern ethnic groups. Its existence not only increases the inner canthus distance, but also decreases the transverse diameter of the eye, which shows that the eye fissure is short and round. Because it covers part of the field of vision, it reduces the length of the eye fissure and makes the eyes lose their aesthetic feeling. How to deal with the problem of epicanthus or slack medial canthus ligament or too wide medial canthus spacing; First of all, let's understand the position of the corner of the eye and the length of the ligament in the corner of the eye that needs to be shortened. The testee and the measurer sit opposite each other. The subjects looked straight ahead, and the surveyors measured with steel ruler, respectively, and obtained the following data.

1. The length of ptosis: the distance from the inner canthus angle to the outer canthus angle.

Width of eyelid cleft: the distance between the upper and lower eyelid edges passing through the pupil.

3. Upper eyelid height: the distance from the edge of the upper eyelid through the pupil to the lower edge of the eyebrow. 4. Inner canthus spacing: the distance between two canthus on the horizontal line of two pupils. 1. The length-width ratio of blepharoptosis = the length of blepharoptosis ÷ the width of blepharoptosis.

2. The proportional relationship between medial canthus distance and blepharoptosis length = medial canthus distance ÷ blepharoptosis length.

3. The proportional relationship between the width of palpebral fissure and the height of upper eyelid = the width of palpebral fissure ÷ the height of upper eyelid. (1). The proportional relationship between the length and width of palpebral fissure

The aspect ratio of ptosis increases. First of all, it shows that the length of ptosis has become longer, which is rare for normal eyes with no abnormal appearance. Secondly, it shows that the degree of blepharoptosis is getting smaller, and orientals account for a considerable proportion. The reasons are: ① ptosis caused by various reasons; (2) ptosis or ptosis. It should be corrected according to different reasons, and the length-width ratio after correction should be between 2.5 and 4.4.

The ratio of length to width of the fissure is reduced, which is mostly pathological, or the ectropion deformity caused by various reasons leads to the widening of the eyelid fissure, or the length of the eyelid fissure is shortened due to the adhesion of the inner and outer canthus and the serious epicanthus.

⑵ The proportional relationship between the inner canthus spacing and the length of blepharoptosis.

The increase is due to:

① epicanthus.

② Widening of orbital distance.

③ Relaxation of medial canthus ligament.

④ The length of palpebral fissure became shorter.

The fourth reason is rare. We should correct epicanthus according to different reasons, widen the orbital distance and shorten the medial canthus ligament.

⑶ The proportional relationship between the width of palpebral fissure and the height of upper eyelid.

The upper eyelid height of normal people is about 65438+ 0.5 times the width of eyelid fissure. Exceeding this value is mostly caused by eye fissure stenosis, ptosis or ptosis, which should be corrected separately. Less than this value is mostly caused by drooping eyebrows, and the distance from the lower edge of eyebrows to the upper eyelid edge decreases. Most of the aging faces of the elderly are accompanied by drooping eyebrows, so the eyebrows should be raised to a suitable position during wrinkle removal surgery. For people with high upper eyelids, the height of double eyelid line should be wider to make up for the uncoordinated proportion caused by high upper eyelids; If the upper eyelid is narrow, a narrow double eyelid line should be designed or it is not suitable for European double eyelid surgery.

Incision of canthus is minimally invasive, and there is no need for dressing after operation, which has no effect on vision. Suture can be removed 5 days after operation, or absorbable suture can be used to avoid suture removal. A small eye crack will seriously damage a person's image and his confidence will be greatly reduced. Many people whose eyes are too small can be corrected by opening the corner of their eyes. Doctors will choose different surgical methods according to the specific situation of patients. For example, some eyes are too small and the epicanthus is serious, and then the condition of too small eyes can be improved by trimming the epicanthus. Of course, the choice of this operation is to use major surgery to complete the outer canthus.

Choose the right way to open your eyes;

According to different situations, different canthotomy methods are adopted to correct microphthalmia.

(1) Open the inner corner of the eye, aiming at people whose eyes are too wide apart and whose facial features look scattered. In addition, this kind of surgery will correct those whose eyes are not bright enough and the root of the bridge of the nose is too collapsed, and it will enlarge the skin of your eyes, especially for those very European faces.

⑵ The lateral canthus opening operation is suitable for those with small lateral canthus angle or adhesion caused by congenital, severe trachoma, burns and other reasons.

⑶ blepharoplasty is a kind of inner canthoplasty, which is corrected by adjusting the position and angle of canthus.

Although it is a minor operation, the nursing after opening the corner of the eye can not be ignored. Excessive use of eyes should be avoided in the short term after operation to prevent eye inflammation, because this situation may cause adhesion of new wound and affect the effect of canthotomy.