The method of eye whitening is to remove the degenerative yellowing deposits and superficial dilated abnormal blood vessels from the exposed area of the bulbar conjunctiva, induce the growth of a healthy conjunctiva, and restore the bright white color of the eyes for a cosmetic effect. The surface layer of the eye is normally a transparent membrane, which is thin and smooth and delicate. Drinking alcohol will be red. Washing your face and hair can be red. Contact with allergens can be red, any eye surgery can be red. The redness starts when you take anesthetic drops, the redness starts with inflammation, the redness starts with eye strain, the redness starts with computer exposure, the redness starts with fever, and the redness starts with high ambient temperature. Emotions are also red because there are many capillaries in the membrane. Under normal circumstances, they are not filled with blood, and we cannot see them with the naked eye, but they become red when we encounter all of the above. Eye redness is related to the body’s sensitive immune response and varies greatly from individual to individual, and the eyes will still have all the above-mentioned body reactions after bleaching. The color of the sclera is the base color as the skin also has color differences, for example, jaundiced people have yellow skin and yellow eyes, and people with photosensitive pigmented skin also have pigmentation in their eyes, so people cannot be compared to each other. When people are old and have yellow eyes or other reasons for yellowing degeneration abnormalities in the surface layer of the eye while the sclera color looks good, whitening surgery is meaningful, but the surgery is limited to a small area of the surface, do not pursue perfection and operate on a large area, thus affecting the safety of the eye.