Abstract: The ophthalmic microscope has a slit beam light source mounted in a fixed relation to a telescopic objective lens for producing a slit beam which passes through a focal point of the objective lens in an image space before passing through the objective lens. The slit beam is thus fixed with respect to the objective lens to travel parallel to the optical axis of the objective lens in object space. The working distance can be varied without adjusting the illumination.

Abstract: A method and an apparatus for conducting microsurgery on human or animal tissue which includes alternately providing an Argon laser beam pulse and a YAG laser beam pulse in a cycle which is equal to or less than one second. A robotic device including piston and cylinder arrangements is provided for activating the control keys on a control panel associated with the Argon and YAG lasers.

Abstract: An ophthalmic microscope combined with a laser photocoagulator and a binocular comprising a first telescopic tubular section connected to the binocular and a second tubular section slideably connected to the first section. The second section comprises an objective lens and a first reticle fixed to the second telescope section spaced within the telescope. A second reticle means is provided on the first telescopic section between the objective lens and the first reticle. A field lens is provided within the first telescopic section and is arranged such that the focal point of the field lens coincides with the second reticle. Laser means includes means on the first telescopic section for passing the laser beam into the telescope along an axis contained within the plane which includes the second reticle.

Abstract: A microscope which is suitable for slit-lamp microscopy of the fundus without contact lens, stereo-chronoscopy, and laser photo-coagulation in the fundus and the anterior segment of the eye, is provided having two telescopic sections, the first section having an objective lens capable of projecting by rectangular projection the three-dimensional image of the fundus of an eye in the microscope. A reticle is provided a predetermined distance from the objective lens within the microscope such that when the microscope is properly aligned with the eye, the reticle will be in the plane of the image of pupil projection in the image of the eye. The second telescopic section has a field lens and viewing apparatus and a reticle means spaced from the field lens such that it will be at the focal point of the field lens. Slit-lamp means are provided on the second tubular section such that it will project a slit-lamp beam focused at the focal point of the field lens.