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US 7,118,216 B2Granted
Method and apparatus for using adaptive optics in a scanning laser ophthalmoscope
AssigneeUniversity of Rochester
InventorAustin Roorda
Life of this patent
Estimating the term…
Abstract
A scanning laser ophthalmoscope incorporates adaptive optics to compensate for wavefront aberrations in the eye. Light from a light source is scanned onto the retina. Light reflected from the retina is detected for imaging and is also used for wavefront sensing. The sensed wavefront aberrations are used to control an adaptive optic device, such as a deformable mirror, disposed in the path of the light from the source in order to compensate for the aberrations.
Claims30
A method of imaging an area of a retina of a living eye, the method comprising:
- (a) providing light from a light source;
- (b) injecting the light from the light source into a common optical path;
- (c) performing a two-dimensional transverse scan of a focused spot of the light from the light source on the area of the retina such that the light is stationary at a pupil plane of the living eye;
- (d) receiving light reflected from the focused spot on the retina back into the common optical path;
- (e) from a first portion of the light reflected from the retina, detecting a wavefront aberration of the eye;
- (f) disposing an adaptive optical element in the common optical path between the light source and the eye;
- (g) controlling the adaptive optical element to compensate for the wavefront aberration in the light scanned on the area of the retina to project the focused spot onto the retina;
- (h) controlling the adaptive optical element to compensate for the wavefront aberration in the light reflected from the focused spot on the retina back into the common optical path;
- and
- (i) from a second portion of the light reflected from the retina, producing an image of the area of the retina.
7 more elements
A system for imaging an area of a retina of a living eye, the system comprising:
- a light delivery section, comprising a light source, for providing light from the light source and for injecting the light from the light source into a common optical path;
- a scanning section for performing a transverse two-dimensional scan of a focused spot of the light from the light source on the area of the retina light is stationary at a pupil plane of the living eye and such that light reflected from the focused spot on the retina is received back into the common optical path;
- a wavefront sensing section, receiving a first portion of the light reflected from the retina, for detecting a wavefront aberration of the eye;
- a wavefront compensation section, comprising an adaptive optical element disposed in the common optical path between the light source and the eye, for compensating for the wavefront aberration in the scanned on the area of the retina to project the focused spot onto the retina and for compensating for the wavefront aberration in the light reflected from the focused spot on the retina back into the common optical path;
- and
- a light detection section, receiving a second portion of the light reflected from the retina, for producing an image of the area of the retina.
3 more elements
Dependencies are inferred from the claim text.