Patent ID: 8888765

Claim:
An infrared binocular indirect ophthalmoscope for imaging and treatment on a human eye, the infrared binocular indirect ophthalmoscope comprising: an infrared light source that generates infrared light; a beam separator defining a hole, the infrared light forming a first image of the light source at the beam separator; a collimating lens that collimates the infrared light, the collimating lens having a first focal length and being separated from the beam separator the first focal length; an illuminating lens that focuses the infrared light to form a second image of the light source in a pupil of the human, the illuminating lens having a second focal length and being separated from the collimating lens by a distance equal to a sum of the first focal length and second focal length; and a treatment beam confocally transmitting with the infrared light and passing through the hole defined by the beam separator, such that the treatment beam is coaxial with the infrared light source and passes through to the human eye to activate a photosensitizing agent that performs treatment on a treatment area of the human eye, the treatment beam causing activation of the photosensitizing agent when operating at a predetermined wavelength, wherein the second image is reflected and passes through the illuminating lens and collimating lens such that it is deflected onto a camera to form a third image of a retina of the human eye, the third image of the retina representing a field of view, wherein the treatment area includes an entirety of the field of view wherein an optical power of the illuminating lens is at least one of a first optical power and a second optical power greater than the first optical power, wherein the first optical power produces a first magnification of the field of view and a first size of the field of view and the second optical power produces a second magnification of the field of view and a second size of the field of view, such that the first magnification is greater than the second magnification and the second size of the field of view is greater than the first size of the field of view.