I don't know what kind of surgery you want to refer to, but for various references before and after eye surgery, please refer to official website of Cho Enxin, a Korean hospital that conducts customized eye surgery.
No matter what kind of eye surgery, experienced experts should be selected, and customized surgery according to your own situation will be safe and satisfactory. Only by customizing the operation according to your own eye condition can you do a satisfactory operation at one time. For more reference drawings, please refer to official website.