Surgical ophthalmoscopes

A surgical ophthalmoscope for observing the fundus of a patient's eye, the ophthalmoscope having a left eyepiece and a right eyepiece, a light source for directing light into the patient's eye, a condensing lens for focusing an image of the patient's eye in a focal plane perpendicular to an optical axis, a telescopic tube, an image-interchanging device for splitting the image into a left image and a right image and then interchanging the images such that image rays entering the right side of the condensing lens are directed to a right optical path, while image rays from the left side are directed to a left optical path, and left and right magnifying devices, each including an objective lens and an ocular lens situated between the image-interchanging device and the eyepieces in optical alignment to magnify the interchanged images and to transmit the magnified images to the respective eyepieces.