DEVICE FOR DETECTING A STATE OF THE CORNEA OF THE EYE AND ASSOCIATED METHOD

摘要

The invention relates to a device (1) for detecting a state of the cornea (3) of the eye (5) comprising a contrast imaging unit (11) with laser granularity, having: a source (13) of coherent electromagnetic radiation intended for lighting up the cornea (3) of the eye (5); a detector (15) of at least one speckle image diffused by the cornea (3) of the eye (5); a unit (17) for processing the speckle image configured to establish a normalised histogram of the speckle image, and to determine the order of the gamma distribution which makes it possible to extrapolate the normalised histogram, the state of the cornea being associated with a first state corresponding to a surface diffusion coming from the surface state of the cornea (3) if the extrapolated gamma distribution is of the order N=1, and the state of the cornea being associated with a second state corresponding to a diffusion coming from the volume of the cornea (3) if the extrapolated gamma distribution is of order N>1.