Abstract: A method and a device is described. The probe device is a leading probe for surgical procedures which includes both instrument access and illumination. The leading probe device includes an annular arrangement of a plurality of light transmission fibers about a central instrument-receiving working channel. The leading probe may be fixed on the outer wall of the eye by a notched footplate with suitable suture material. Alternatively, the present invention device may have an appropriate adhesive member for securing the leading probe at the surface of the eyeball.

Abstract: An attachment for microscopes, in particular for stereomicroscopes, facilitates a contact-free viewing of an eye freely movable by the patient, in particular the fundus of the eye. Such an attachment must be easily and quickly attachable to the microscope and must deliver an image section of up to 120.degree.. Moreover, the free movability of the eye must be assured and the attachment must also at high temperature be able to be sterilized quickly, without influencing the wearability of the attachment. This is achieved by an attachment having two lenses or lens systems, the distance between the systems being adjustable and the systems replacing the objective lens of the microscope. The housing of the attachment can be connected to the microscope through a screw or bayonetlike coupling.