Exoscope

摘要

An exoscope (10) serves for observing and illuminating an object field on a patient from a position set apart from the patient's body. A lens system (12) serves to observe the object field and an illumination (14) serves to illuminate the object field (56, 154). A distance between the lens system (12) and the object field can be modified by a bracket. A shaft (16) comprises on its distal end a head member (20) that is widened in comparison to it, so that the illumination reaches into the distal-side head member (20). Positioned in the head member (20) is at least one radiating illuminating unit (22, 24) whose radiant characteristic can be adjusted in such a way that the object field can be illuminated homogeneously at all possible distances from the lens system. Supply lines for the at least one illuminating unit (22, 24) are positioned in the shaft (16). Filters or diaphragms are integrated in the head member to make it possible to conduct photodynamic therapy, photodynamic diagnosis, autofluorescent methods or ICG (indocyanine green) examination (Fig. 3)