Apparatus for measuring the topography and thickness of the cornea and measuring method used

Abstract

A piece of apparatus for measuring the topography and thickness of the cornea and a measuring method employed to this end, this piece of apparatus comprising a system for tracking (1) the direction of gaze (D) of the eyes (2), which includes a camera (6) and a diffuse light emitter (7) for each eye (2); a system for inspecting (3) the cornea (4), which comprises a light emitter (8) for each eye (2) and emits light beams (9) onto the cornea (4) and a receiver assembly (10), which receives the light reflected by the cornea (4); a system for displaying visual stimuli (13) in front of the eyes (2) and; a computer (5) that controls the light emitters (7, 8) and the system for displaying visual stimuli(13), which also processes the information from each camera (6) and the receiver assembly (10), in order to determine the topography and thickness of the cornea (4) of each eye (2).

Description

technical field [0001] The present invention relates to devices and methods used to determine the optical properties of the eye, thereby proposing a piece of equipment and a method for measuring the surface condition and thickness of the cornea. Background technique [0002] Vision is the gateway to 95% of the information we receive and is therefore the most important pathway for spatial orientation, emotional communication and especially learning (eg regarding form recognition, reading and reading comprehension skills, etc.). Therefore, it is wise to have regular vision checks in order to detect and treat possible functional problems. [0003] The cornea is a transparent hemispherical structure at the front of the eye that protects the iris and lens while allowing light to pass through. Its refraction properties determine 2 / 3 of the focusing ability of the human eye. The corneal refractive power is caused by the refraction of the anterior surface of the cornea, thus meani...

AI Technical Summary

Problems solved by technology

Furthermore, in order to measure the cornea, these devices require the patient to keep the gaze direction of his eye fixed at a certain point, since in order to be able to perform the test it is crucial that the measurement system is correctly aligned and aligned with respect to the eye to be analyzed. Focusing, which has proven to be annoying and cumbersome for the patient, and the test must be repeated in many cases due to the patient blinking or looking away from the designated point

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