Abstract: One embodiment of the present invention is a scanner for a beam of scanning optical coherence tomography (“OCT”) radiation that includes: (a) a source of OCT radiation; (b) a scanner; and (c) scanning optics whose image surface has a negative field curvature.

Abstract: One embodiment of the present invention is an optical delay line that comprises a plurality of optical elements in optical communication with each other, wherein: (a) at least one of the plurality of optical elements is capable of spatially dispersing a spectrum of an optical signal to provide a spatially dispersed optical signal; (b) at least one of the plurality of optical elements is adjustable to affect one or more of a phase delay and a group delay of an optical signal; and (c) at least one of the plurality of optical elements compensates for polarization introduced into the optical signal by others of the optical elements.

Abstract: One embodiment of the present invention is an optical coherence tomography (“OCT”) application apparatus that performs an OCT application on an object. The OCT application apparatus includes: (a) an OCT scanning apparatus which outputs a scanning beam of OCT scanning radiation; and (b) an active tracking system that generates and projects a tracking beam of tracking radiation onto a region including a reference tracking feature; wherein the active tracking system further includes an analysis system that analyzes tracking radiation reflected from the region to detect movement of the object and to generate tracking signals, and applies the tracking signals (i) to direct the active tracking system to move the tracking beam to follow the movement of the object, and (b) as input to the OCT scanning apparatus, to direct the OCT scanning apparatus to move the scanning beam to follow the movement of the object.

Abstract: One embodiment of the present invention is an optical coherence tomography (“OCT”) application apparatus that performs an OCT application on an object.

Abstract: Embodiments of the present invention provide a method and apparatus for measurement of a corneal profile of an eye. In particular, one embodiment of the present invention is a corneal diagnostic instrument including: (a) a Placido ring illuminator disposed to project radiation onto a cornea to generate a Placido ring image; (b) multiple slit lamp projectors disposed to project slit light beam images onto the cornea to generate slit light beam images; (c) a camera system optically disposed to detect the Placido ring image and the slit light beam images; and (d) a controller, coupled to the slit lamp projectors, the Placido ring illuminator, and the camera system, to cause the slit light beam images and the Placido ring image to be generated and detected in a predetermined sequence, wherein the controller is responsive to the detected Placido ring image and the detected slit light beam images to determine a corneal thickness profile.

Abstract: Embodiments of the present invention provide a method and apparatus for measurement of aberration of an eye. One or more embodiments provide an aberration measurement instrument that enables measurement wherein Hartmann-Shack spots have reduced speckle; one or more embodiments provide an aberration measurement instrument that enables measurement of an eye having a large diopter power variation over different zones of the eye; one or more embodiments provide an aberration measurement instrument that enables measurement with accommodation control; one or more embodiment provide an aberration measurement instrument wherein radiation reflected by a cornea and radiation scattered by intra-ocular elements are blocked; and one or more embodiment provide an aberration measurement instrument wherein a hazy background produced by radiation multiply scattered within an eye is reduced.

Abstract: Embodiments of the present invention provide a method and apparatus for measurement of a corneal profile of an eye. In particular, one embodiment of the present invention is a corneal diagnostic instrument including: (a) a Placido ring illuminator disposed to project radiation onto a cornea to generate a Placido ring image; (b) multiple slit lamp projectors disposed to project slit light beam images onto the cornea to generate slit light beam images; (c) a camera system optically disposed to detect the Placido ring image and the slit light beam images; and (d) a controller, coupled to the slit lamp projectors, the Placido ring illuminator, and the camera system, to cause the slit light beam images and the Placido ring image to be generated and detected in a predetermined sequence, wherein the controller is responsive to the detected Placido ring image and the detected slit light beam images to determine a corneal thickness profile.

Abstract: Embodiments of the present invention provide a method and apparatus for measurement of aberration of an eye. One or more embodiments provide an aberration measurement instrument that enables measurement wherein Hartmann-Shack spots have reduced speckle; one or more embodiments provide an aberration measurement instrument that enables measurement of an eye having a large diopter power variation over different zones of the eye; one or more embodiments provide an aberration measurement instrument that enables measurement with accommodation control; one or more embodiment provide an aberration measurement instrument wherein radiation reflected by a cornea and radiation scattered by intra-ocular elements are blocked; and one or more embodiment provide an aberration measurement instrument wherein a hazy background produced by radiation multiply scattered within an eye is reduced.

Abstract: One embodiment of the present invention is a visual field tester that includes: (a) a projection screen; (b) a stimulus projection system that projects a light stimulus onto a first side of the projection screen; (c) a background projection system that projects a background light onto the first side of the projection screen; and (d) a lens system disposed on a second side of the projection screen that directs light transmitted through the projection screen to a predetermined location.

Abstract: One embodiment of the present invention is a visual field tester that includes: (a) a projection screen; (b) a stimulus projection system that projects a light stimulus onto a first side of the projection screen; and (c) a background projection system that projects background light onto the first side of the projection screen; wherein the stimulus projection system includes: (i) a first rotatable disk having an aperture; (ii) a second rotatable disk disposed in the aperture; and (iii) a stimulus radiation projector that includes a stimulus radiation source and a radiation projection lens system that are configured to project the stimulus from the second disk onto the first side of the projection screen.