[A new magnifying visual instrument for ophthalmic surgery (author's transl)]

A binocular loupe on the principle of the prismatic telescope, small in size and light in weight, and which can be firmly by straps to the head of the doctor, has been developed for use in operative ophthalmology, for the clinical visit, consultation and in the office. Its optic properties greatest possible distance from the work which can be varied with additional lenses, variable magnification even into the region of the smallest biomicroscopes with a relatively large angle of vision, good mobility with regard to the object of vision with unchanged adjustment, simultaneous possibility of using semispectacles for presbyopia and easy swinging of the instrument out of and into the line of vision with one hand movement make this instrument very appropriate for the reasons for which it was developed and makes possible also - especially in the surgery of injured eyes, exact observation and assessment of the eye and performance of operations where no operating microscope is present with much greater magnification as that obtained with a customary loupe. This instrument occupies the spare between the possibilities of use of the loupe and the biomicroscope and can in addition be used in the boundary areas of use of the other instruments with great advantage.