Development of a long cone corneal topographer to evaluate corneas without symmetry of revolution

Abstract

In this project we propose a new corneal topographer that improves the accuracy of measurement from previous versions, by gathering all those details that made them to have great accuracy. The corneal topographer uses the null-screen method which is based on the idea that a reflected image in a surface contains information about the form of the reflective surface. The topographer uses a long cone, and it is aimed to evaluate corneas removing the symmetry of revolution of the algorithms. At first, the corneal topographer is utilized in a spheric reference surface, where the results obtained show that the radio of the reconstructed surface varies 0.11 % from the radio of the tested surface. This project is still in process since the evaluation algorithms must be adapted to evaluate corneas without symmetry of revolution.