Patent ID: 7322699

Claim:
An arrangement for determining the anterior chamber depth of an eye, comprising: a) a slit-shaped illumination radiating on the eye at an angle to the observation axis and imaging optics and the slit shaped illumination comprising punctiform light sources or LEDs and a cylindrical lens, the punctiform light sources or LEDs being arranged in a linear fashion and the cylindrical lens oriented to merge the punctiform light sources into the slit shaped illumination; b) a receiver arrangement which detects scatter images coming from structures of the eye located substantially on the observation axis; c) a signal processing device which receives signals from the receiver arrangement and processes the signals to determine distances between portions of the scatter images that represent the structures of the eye and calculates the anterior chamber depth from the distances; and d) a fixating light source emitting a fixating light on which the patient fixes his gaze with the fixating light being coupled along the observation axis, wherein the observation axis substantially coincides with the patient's viewing axis.