Patent ID: 7887185

Claim:
An arrangement for measuring distances in the anterior segment of the eye of a patient, comprising: an interferometer arrangement that measures the distances of optical functional surfaces of the eye, including the surfaces of a lens of the eye, wherein the arrangement has an optical axis and wherein the eye has an optical axis, wherein reflections of at least one of the lens surfaces are detected; a light source being provided for generating a focus stimulus for the patient; a focusing lens being provided in the beam path of the interferometer, which focusing lens illuminates the eye with a convergent beam bundle; said light source for generating the focusing stimulus being a surface light modulator; and wherein, in measurement of the eye of the patient, means are provided for guiding the optical axis of the eye in a predetermined direction as the patient's eye fixates on a movable fixation mark provided by the light source and focusing lens in order to align the arrangement optical axis with the eye optical axis.