Carl-zeiss-stiftung

Carl-zeiss-stiftung, Heidenheim/brenz

Ortwin Muller

Kurt Schulz

Albrecht Vogel

Gerhard Hanemann

Klaus Biber

Victor Stopar

Gerhard J Muller

Franz Muchel

Fritz Strahle

Erich Blaha

Walter H Lang

Ulrich Lemcke

Gunther Kurbitz

Karl Grunvogel

Heinz Jakubowski

Roland Schmauder

Arnold Guttner

Manfred Spitznas

Gunter Geiss

Alfons Neidlinger

Viktor Stopar

Andreas Kutscherauer

Slit lamp apparatus with peripheral illumination

In an instrument for the examination and surgery of the eye, an ophthalmological objective is combined with an operation microscope whose main objective is combined with an optical system of variable back focus and focal length. Every plane of the eye lying between the cornea and the fundus is imaged by the instrument at an intermediate image plane. In this way, with a single instrument, the operator can carry out work on the cornea, the eye lens, the vitreous body, and the retina. Since the instrument provides the observer with a reflection-free image, contact of the eye to be operated upon with an optical auxiliary means which eliminates the refractive power is unnecessary.

Apparatus for examination and surgery of the anterior and posterior

A light section is generated on the object with an arrangement for the contactless section-like form measurement of curved surfaces by means of an optical detector functioning in a raster-like manner. The light section is received at an angle inclined to the viewing axis by an anamorphotic system and imaged onto a receiver.

Arrangement for making contactless section-like measurements of the form

An Nd:YAG laser of small size with a passive quality switch is combined with a slit-lamp instrument, to form an ophthalmological combination instrument for diagnosis and treatment. By a plurality of pulses within a pulse train, which succeed each other within the .mu. sec range, particularly good therapeutic effects are obtained. A second laser, emitting continuous visible radiation, has its beam aligned with the beam of invisible radiation from the first laser, and shows the user at all times the location of the beam of invisible radiation. The visible beam of radiation is split into two beams separated from each other by a light-free zone, and there is provision for blocking and unblocking these two beams alternately, which produces an effect which greatly aids the user in accurate focusing. This combination instrument affords the user the possibility of making a diagnosis and following it immediately by treatment.

Ophthalmological combination instrument for diagnosis and treatment

The invention contemplates an operation microscope in which three-dimensional viewing adjustment is possible with respect to an object (8) to be observed, all without forcing the surgeon or any co-observing person or instrumentality to move. To this end, the exit pupils and thus all viewing windows are positionally invariant, i.e., they are stationary and therefore can be securely related to a microscope support (5). An objective housing (7) in front of the microscope housing (1) is associated with all viewing systems (2, 3, 4), and this objective housing contains an objective of variable back focus as well as optical components (11, 12) for selective deflection of the observation ray path in each of two polar-coordinate directions. In making any one or all of the three-dimensional viewing adjustments, only elements of relatively low mass within the objective housing (7) need be moved.

Operation microscope

This invention concerns an electronic flashlight for ophthalmological examination instruments.

Electronic flashlight for ophthalmological examination instruments

An ophthalmometer measurement system employs two flat glass plates which move in opposite pivoted directions, to determine the distance between two mirror images on the cornea. The pivot suspensions and pivotal-displacement mechanism are free of play and account for a three-fold improvement in precision of measurement. Provision is made for adjustment to compensate for manufacturing tolerances, in glassplate thickness and mechanical-parts manufacture.

High-precision ophthalmometer which is independent of distance

The invention contemplates a micromanipulator as for the manipulation of a vitrectomy instrument, wherein a single remotely operable control means is effective through three independent spherical-coordinate servoelectric drives to selectively control the operative end of the instrument, within an operating volume defined by spherical coordinates centered at a fixed point of origin; in a vitrectomy, the fixed point of origin is illustratively the point of surgical entry through the pars plana of the eye.

Servoelectric micromanipulator for movement on spherical coordinates

A stereoscopic microscope arranged for multiple observation, so that a surgical operation or other event may be observed simultaneously by two observers, or by one observer and a television apparatus. Three observation light paths are provided, with the centers of their respective entrance pupils lying at the three corners of a triangle. By splitting one beam, two pairs of stereoscopically related observation paths can be obtained. The pupil of the split light path has a diameter which is larger than the diameter of the pupil the other two light paths by a factor approximately equal to square root of two, so that both observers will see images of approximately equal brightness with their right and left eyes. Various specific arrangements of the observation light paths are disclosed.

Stereoscopic microscope for multiple observation

The invention contemplates eye-examination apparatus wherein modular-component construction enables a base with binocular-microscope viewing structure to selectively serve multiple-instrument functions, one of which is specifically an ophthalmometer. In the form described, the ophthalmometer component is a module which, when selected for use with the base module, provides a direct internally developed read-out of reflected-mire displacement in one of the two optical systems of binocular viewing and which provides via the other binocular optical system a concurrent display of the two reflected-mire images in the course of displacement adjustment; in the other selected employment of the base module, the instrument is a slit-lamp microscope. The ophthalmometer axis coincides with the central axis of symmetry of the slit-lamp microscope, so that no adjustment of the base module is needed in relation to a particular eye to make successive use of the same viewing structure in a slit-lamp mode and in an ophthalmometer mode.

Combinable apparatus for examination of the eye

Slit lamp

The invention contemplates slit-lamp apparatus for ophthalmological examinations and is characterized by simplicity of components designed to facilitate use, the use being assumed to involve the analytical operations most often needed. The instrument is portable and provides ready availability of slit-projector means and tonometer means when desired, on the microscope-viewing axis. All components are upstanding, with respect to the mounting base, and simple knurled-ring adjustments enable selection of projected-slit dimensions and filters.

Slit-lamp apparatus

A base for ophthalmological instruments includes a housing within which is mounted a guide plate to which an ophthalmological instrument may be attached. The guide plate extends through an opening in the side of the housing and is mounted on bearings which permit translational movement of the plate along coordinate axes x-y to thereby permit adjustment of the instrument as desired by the physician. The upper surface of the housing serves as a table and a control arm connected to the guide plate extends across the table. A control lever mounted in gimbals on the control arm is provided for fine adjustment of the guide plate. Means are provided for locking the guide plate in any position of adjustment.

Growing community of inventors

Aalen, Germany

Ortwin Muller