The reason why many doctors do not recommend the outer corner of the eye is mainly related to the fact that the outer corner will destroy the special structure of the outer corner of the eye, and the outer corner of the eye has high technical requirements for doctors. Once the postoperative effect of the outer corner of the eye is unnatural, it will be very difficult to repair it surgically. More importantly, because the outer corner of the eye itself is the mucosal area, the outer corner of the eye will grow out soon after the operation, and it will bring the following hazards: First, the outer corner of the eye is not recommended. Because it is easy to cause conjunctival irritation, the outer corner of the eye is the non-mainstream recommended by many informal beauty studios, but regular and experienced doctors will not recommend beauty lovers to have surgery on the outer corner of the eye. Another important reason is that the outer corner of the eye will affect the normal function of the eyes, leading to obvious symptoms of bulbar conjunctival irritation, that is, as the saying goes, white eyes are prone to redness, fear of wind, increased secretions, and easy to get wet when washing eyes. Second, the outer corner of the eye is not recommended because it is easy to cause exophthalmos. Although many beautiful women think that the operation of external canthus is the key to save microphthalmia, in fact, many responsible doctors will not recommend the operation of external canthus. Another reason here is that the outer corner of the eye itself is a downward splitting structure. If it is too big, it looks like the operator's eyes protrude from the side. In addition, the opening of the outer corner of the eye is too large, which will also bring trichiasis. Third, the outer corner of the eye is not recommended, because the application scope is very small, and the outer corner of the eye is not as beautiful as most beautiful women look. The outer corner of the eye is also an operation that many doctors do not recommend. There is another very important reason for not being recommended by doctors. Generally, it is only suitable for patients with congenital microphthalmia. However, if a person with normal eye fissure has surgery in the outer corner of the eye, the outer corner of the eye, which is a mucosal tissue, will grow rapidly, resulting in little practicality at all.