The present study examines five simple optical models of the eye and its application in current mange. So far, many models have been proposed to study the optics of the human eye. In recent years, there has been an increase in surgeries on the anterior part of the eye, such as photoactive cataclysm and corneal transplantation, which shows the importance of further examination of the optics of the eye and measuring the quality of vision. And shows that the use of these models is still popular in most clinics.