Abstract: The device is used for taking photographs of the fundus of the eye (fundus oculi). It comprises: A) an illumination source (1); B) illumination optics (1; 2; 4; 8; 9; 10), which generate light in at least two different frequency bands and which can sequentially direct the light onto the fundus; C) focusing optics (2; 3; 14; 15; 16), which can sequentially generate images of the fundus that is illuminated with different frequency bands; and D) a photographic camera (3), which can record the generated images. The device makes it possible, with minimal illumination intensity and without medicinally induced dilation of the patient's pupils, to generate high-quality colour images and, moreover, to record spectrally resolved images. The device also makes it possible to determine different blood values, particularly the haemoglobin concentration, and the opacity of the crystalline lens.

Abstract: An ophthalmologic apparatus for repeated optical or photometric examination of the fundus or another portion of a patient's eye has an illuminating unit with a light source for a microscope. The optical axis of the microscope can be repeatedly moved to one and the same position relative to a beam of radiation issuing from the center of curvature of the external surface of the cornea in a patient's eye with assistance from a positive field lens which is adjustable with the microscope and acts not unlike an ophthalmoscopic lens for indirect ophthalmoscopy. The lens projects for the microscope a real intermediate image of the selected portion of a patient's eye in an intermediate plane adjacent that focal point of the lens which is remote from the patient's eye. An illuminated or radiation emitting marker is provided at that side of the intermediate plane which faces away from the lens and close to the optical axis of the microscope.

Abstract: The ophthalmological instrument serves for examining the background (7) of the eye with simultaneous determination of intraocular pressure. A transparent contact member (1) has a concavely curved surface (13) adapted to the curvature of the cornea (11) of the eye (6). In the center of this curved surface (13), a transparent pressure transmitting element (25) is arranged which acts on a pressure sensor (23) by way of a cavity (19) filled with a liquid (26). The contact member (1) is designed as an imaging optical component forming together with the observation optic (9) an observation device for examination of the eye background (7).

Abstract: A microscope, whose ocular tubes receive light that is reflected by the blind spot or another selected portion in the innermost part of a human eye in response to illumination by a flash unit or a slit lamp, contains an ocular-like casing which replaces one of the oculars and contains a photodiode located in the respective image plane and generating signals denoting the intensity of light in the respective image plane. Such signals are transmitted to one input of a dividing circuit which further receives signals denoting the intensity of light which is emitted by the light source of the flash unit or slit lamp. The signal at the output of the dividing circuit is displaced and/or recorded and is indicative of reflectivity of the selected portion. The other ocular tube of the microscope contains a customary ocular with a marker located in the respective image plane.