Device for examining anterior sections of the eye

US4523821A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Walter Lang · Oberkochen, DE
• Dieter Muller · Badenhausen, DE
• Franz Muchel · Oberkochen, DE
• Roland Wanner · Oberkochen, DE
• Peter Niesel · Bollingen, DE

Key dates

• Filing date: Dec 7, 1982
• Grant date: Jun 18, 1985
• Expiry date: Dec 7, 2002

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/117
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a device for examining anterior sections of the eye, based on the Scheimpflug principle, an electric receiver is provided in the imaging-beam path for electronic evaluation of results of the examination. Various meridian sections in the patient's eye are produced by means of a rotatable prism. A fixation object and a graticule in the illumination beam path enable easy reproducibility of measurement results, as well as facilitating follow-up examinations which seek to observe the same eye for changes, from one examination to a later examination.