After opening the back corner of the eye is not going to grow back, which is determined by the principle of opening the back corner of the eye surgery operation. It is the same as the principle of opening the inner corner of the eye, which is to use a scalpel to cut two triangles in the back corner of the eye, and then remove part of the skin, subcutaneous tissue, fat, etc., as needed, and finally sew the two triangles together, which is equivalent to shortening the distance of the longitudinal axis of the triangle and increasing the distance of the horizontal axis, the corner of the eye will look longer, and the visual field will The visual field will become larger. After opening the back corner of the eye, at most there may be a mild scar growth, which is mostly due to an infection after opening the eye, or the candidate himself is a scar body, which can be controlled after external drug anti-scar treatment, but growing back is certainly not.