An occasion of tremendous significance to ophthalmology had just taken place. Gullstrand described a device with the potential to advance the understanding of the eye and its problems as profoundly as did the direct ophthalmoscope 50 years earlier. By 1916, Henker had developed a practical combination of Gullstrand’s illuminator and Czapski’s corneal microscope, marking the first major advance in methods of examining the external eye in more than a century. In 1936 Comberg established the co-pivotal and iso-centric relationship between the microscope and slit illuminator and, in 1938, Goldmann’s collaboration with Haag-Streit produced the first par-focal instrument which also featured the single control lever design in use to this day. Goldmann also influenced the shift to Köhler illumination, greatly improving the efficiency of the slit lamp illuminator, the very heart of this marvellous device.

Manufacturing Company: HAAG-STREIT DIAGNOSTIC