Patent ID: 10545326

Abstract:
An illumination and observation system (1) for an ophthalmic surgical microscope (2) has first, second, third and fourth observation pupils (4, 5, 8, 9) for two observers, a coaxial illumination (6, 10, 11) in the first, third and fourth observation pupils to generate a red reflex (13) therein, and a main illumination (7) in the second observation pupil. For widely illuminating the surroundings, the main illumination has a larger illumination field than the coaxial illumination in any of the first, third and fourth observation pupils. For superior observation quality and a visible and homogenous red reflex in the second observation pupil, the main illumination overlaps at least 50% with the second observation pupil. The main illumination may be aligned within ±5° to an optical axis (12) of the second observation pupil and to overlap the coaxial illumination at least 50% with the first, third and fourth observation pupils.