[Highlights on the design procedure of corneal refractive surgery].

Corneal refractive surgery, especially excimer laser corneal refractive surgery, has been used nearly 20 years in China. As the development of high technology and the change of life style, people who received refractive surgery not only demands good visual acuity but also good visual quality. In recent years, more and more new techniques and equipments have sprung up in this field. Therefore, this provides more approaches for surgeon to design the surgical plan and meet patients' needs to see clearly and comfortably. In this article, the author minutely dissects the importance and influence of the design procedure from the perspective of scotopic vision (such as; design of thin cornea, severe astigmatism, scotopic large pupil size, and special corneal shape) and personalized surgical parameters.