Indirect ophthalmoscope
AssigneeKeeler Corporation
InventorHenry Pedack
Life of this patent
Estimating the term…
Abstract
An indirect ophthalmoscope is used in the observation of the eye, and comprises viewing optics through which, in use, at least part of said eye is viewed. Light from the eye travels to and through the viewing optics along a viewing path, and the ophthalmoscope includes a lens (36) which is movable between an operative position (in which it is situated in the viewing path) and an inoperative position (in which it is situated clear of the viewing path). The lens 36 can be used to enable the observer to see a magnified image of the eye under examination.
Claims14
An indirect ophthalmoscope for use in the observation of an eye, the ophthalmoscope comprising viewing optics through which, in use, at least part of said eye is viewed, light from the eye travelling to and through the viewing optics along a viewing path, wherein the ophthalmoscope includes a lens so mounted thereon as to be movable between an operative position, in which it is situated in said viewing path so as to refract light from the eye under examination, and an inoperative position, in which the lens is situated clear of the viewing path.
A magnifying device for a binocular indirect ophthalmoscope, the device comprising a magnifying lens movably mounted on a mounting bracket adapted to be attached to the front of an ophthalmoscope, wherein, with the device attached to an ophthalmoscope, the lens is movable between an operative position in which it magnifies both left and right eye images seen through the ophthalmoscope and an inoperative position in which it does not affect the size of said images.
An indirect ophthalmoscope for use in the observation of an eye, the ophthalmoscope comprising viewing optics for enabling the user to view at least part of said eye, light traveling from said eye to the viewing optics and the user along a viewing path, wherein the ophthalmoscope also includes a movable lens carried thereby and movable between an operative position in which it is situated in the viewing path so as to refract light from the eye under examination, and an inoperative position in which it is situated clear of the viewing path, wherein the viewing optics are operable to enable the user to view at least part of the eye under examination when the movable lens is in its operative position and when no lens is in said position.
Dependencies are inferred from the claim text.