Patent ID: 8398237

Claim:
An optical device for measuring the transmission and diffusion of a tissue ( 7 ) of the front segment of an eye, said device comprising: at least one light source ( 1 ) capable of emitting a light beam, an optical collimation system ( 2 , 4 ) capable of directing the collimated light beam towards a tissue ( 7 ) of the front segment of an eye to be characterized, an optical mire ( 6 ) placed on the optical path between the optical collimation system ( 4 ) and the tissue ( 7 ) of the front segment, an optical imaging system ( 9 ) capable of receiving a light beam transmitted by the mire ( 6 ) and by the front segment tissue ( 7 ) and capable of forming an image of the mire ( 6 ) on an image detector ( 10 ), and an image processing system ( 11 ) capable of calculating a modulation transfer function for the tissue ( 7 ) from an image ( 22 ) of the mire through the tissue ( 7 ), characterized in that: said optical mire ( 6 ) comprises a set of alternately light ( 13 . 1 , 13 . 2 . . . ) and dark ( 14 . 1 , 14 . 2 . . . ) angular sectors ( 13 , 14 ) radially distributed from a central point (O).