Combinable apparatus for examination of the eye

US4315672A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Ortwin Muller · Aalen, DE
• Victor Stopar · Oberkochen, DE

Key dates

• Filing date: Jul 9, 1979
• Grant date: Feb 16, 1982
• Expiry date: Jul 9, 1999

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/107
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

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.