Burchardt’s Ophthalmoscope 1883: A Non-Luminous Loring Style Instrument
Burchardt’s Ophthalmoscope 1883 is a remarkable example of the non-luminous Loring style of ophthalmoscope. It features two overlapping rotating lens wheels. Together they represent a significant innovation in retinal examination. The design offers far greater convenience and versatility than the disconnected individual lenses of earlier instruments. A rectangular plane mirror with a central opening rotates into position on either the left or right side. This feature accommodates both right and left-handed examiners with equal ease.
The Two Rotating Lens Discs
The lenses mount on two discs with separate centers of rotation. The lower larger disc measures 40mm in diameter and carries 9 concave lenses. These lenses progress in steps of one dioptre from minus 1 to minus 9. The upper combination disc carries 5 lenses of 10mm diameter. These provide powers of minus 0.5, minus 10, minus 20, plus 10, and plus 20 dioptres. Each lens measures 8.5mm in diameter. Together the two discs offer a continuous and natural progression of corrective lenses. Consequently, examination becomes far more convenient than with disconnected individual lenses of earlier instruments.
Who Was Max Burchardt?
Max Burchardt (1831–1897) led a remarkable life before developing this instrument. He was born in Pomerania, between Poland and Germany on the Baltic Sea. He studied at the Friedrich-Wilhelms-Institut in Berlin in 1851 and obtained his doctorate in 1855. Furthermore, he served as a military medical officer, including as captain of the medical corps at Charité. He worked through the Franco-Prussian War as a military doctor. In 1880 he became a professor at the University of Berlin. He retired from the military as a brigadier general in 1890 and died of lung inflammation in 1897. He published significant works on ophthalmoscopic examination, vision testing, treatment of infectious conjunctivitis, and other topics. The history of the ophthalmoscope places Burchardt’s contribution firmly within the golden age of ophthalmic instrument development.
A Continuous Series of Corrective Lenses
The overall design reflects Burchardt’s stated purpose clearly. He aimed to provide a continuous and convenient series of corrective lenses within a single compact instrument. Moreover, the dual disc system achieved this goal elegantly. The result was an instrument that combined optical thoroughness with practical ease of use. Explore our full collection of antique ophthalmoscopes to discover more exceptional instruments from this pivotal era in eye care history.
A Museum-Quality Piece of Ophthalmic History
This 1883 instrument survives in remarkable condition. It displays the ingenuity and craftsmanship of Victorian ophthalmic instrument making at its finest. Few examples of this specific design appear on the collector’s market today.
