Eye examination device by means of tomography with a sighting device
A sighting device is provided for an examination of the eye, including at least one moving target with a programmable form and trajectory, the target being displayed on a visualisation unit, such as an appropriate screen and visible from both eyes during the examination. An in-vivo tomographical eye examination system is also provided, including: a Michelson interferometer, generating a full-field OCT image, adaptable optical apparatus, arranged between the interferometer and an eye for examination, achieving the correction of the wavefronts coming from the eye and also the wavefronts going to the eye, detection apparatus, arranged after the interferometer, permitting the interferometric measurement by the OCT principle without modulation nor synchronized detection and a sighting device, with at least one mobile target with a programmable form and trajectory, the target being displayed on an appropriate screen and visible from at least one of the eyes during the examination.
1. A system for examining the eye by in vivo tomography, comprising a tomography device including:
a Michelson interferometer, producing a full field optical coherence tomography OCT setup, adaptive optical means, arranged between the interferometer and an eye to be examined, producing a correction of the wavefronts originating from the eye as well as those reaching the eye,
means for detection, arranged downstream of the interferometer, capable of carrying out, without synchronous modulation or detection, the interferometric measurement according to the OCT principle, and
a sighting device comprising at least one moving target, having a programmable shape or a programmable trajectory, said target being displayed on viewing means and visible from at least one of the eyes of said patient during the examination period.
2. The system according to claim 1 , wherein the sighting device and the tomography device collaborate by using an a priori knowledge of the trajectory or of the shape of the target to readjust the images of the eye as a function of said trajectory.
3. The system according to claim 1 , further including means for tracking movements of the eye to be examined, collaborating with the tomography device.
4. The system according to claim 1 , further including means for enabling the image of the target to reach both eyes of the subject to be examined.
5. They system according to claim 1 , further including means for enabling the image of the target to reach the unexamined eye of the target selectively from one side or from the other side of the examined eye.