Ultra wide-field optical coherence tomography

An optical coherence tomography (OCT) device comprising:

• a light source for generating a beam of radiation;
• a beam divider for separating the beam along sample and reference paths;
• a detector for measuring the interference between the radiation in the sample and reference paths;
• an optics head housing optics and opto-mechanical components for scanning the beam over transverse positions within the eye about a pivot point substantially coincident with a location in the pupil, said optics head being independently movable with respect to the eye so that the beam enters the pupil at multiple different entry angles to vary the field of view of the scan;
• a detector for measuring radiation reflected from the eye and generating signals responsive thereto;
• a processor for converting the signals into image information;
• and
• a driver under the control of the processor for moving the optics head to vary the entry angle while maintaining substantial coincidence between the scanning pivot point and said location in the pupil, said processor collecting signals at each of said multiple entry angles and combining said signals to generate an image, said optics head being movable about a first rotary axis and wherein the first rotary axis is spaced from the pivot point about which the beam is scanned and wherein the driver further adjusts the position of the optics head to insure that the substantial coincidence between the scanning pivot point and the location in the pupil is maintained at each of the multiple entry angles and wherein said further adjustment includes one of (i) a translation of the optics head and (ii) a rotational movement about a second rotary axis.