Biomedical subjects
Publications and source records attributed to H Remky.
Demonstration of monitoring of pathological eye movements by standardized Video Documentation. The Patient is positioned in front of a circle (diameter 80 degrees or 60 degrees) with individual fixation bulbs in the secondary and tertiary gaze directions. Tapes and immediately printable freeze-pictures make precise follow-ups and therapy control possible.
The first inventor of non-contact tonometry was the German ophthalmologist Erich Zeiss, grandson of Carl Zeiss. In 1951 he designed a "pneumatic" tonometer or "aerotonometer". A patent application was prepared but, regrettably, never sent to the Patent Office. This article pays tribute to Zeiss' achievements as a designer of ophthalmologic instruments.
Survey of the development of heliocautery from Antiquity to the 18th century. In art, photocoagulatin of a human eye (in order to destruct it) is, for the first time, represented in 1817 by Hieronymus Hess of Basel. A full account is given of (a) Wilhelm Werneck's therapeutic coagulations (1835): rupturing of cataract by focussed light (sun, phosphorus); (b) Maximilian Adolf Langenbeck's "insolation" of corneal, pupillary and retinal lesions and of traumatic cataract (1859); (c) Vinzenz Czerny's coagulation experiments on the retina of various animals (1867, 1882). J. Morón-Salas was the first to try photocoagulation of retinal tears (1946), but the actual initiator of modern ophthalmic photocoagulation therapy is Gerhard Meyer-Schwickerath (1949).
Seven patients are described who presented with the typical fundus finding of gold-colored crystals in the superficial layers of retina in the macular area (characteristic of canthaxanthin retinopathy) without having taken canthaxanthin-containing drugs. Canthaxanthin used as a food additive is discussed as a possible cause of the crystal deposition. There may be a rather high individual tendency to develop crystal deposition, possibly related to a metabolic defect affecting canthaxanthin kinetics or to pre-existing changes in the retinal pigment epithelium. In one patient a slight decrease in crystalline deposition was observed in the course of four years.
The principle of contact lens ophthalmoscopy was discovered in 1703; the fundus contact lens was very nearly invented in 1844. Coaxial illumination was applied in 1823 and improved in 1841 by including a mirror, while, the first usable ophthalmoscope was designed in 1847. This article pays tribute to the virtually ignored services of Méry, Kussmaul, Purkinje, Hofmann, and Babbage.
The trabeculectomy developed independently by Sugar, Vasco-Posada, Koryllos and Cairns is equivalent to a sinusotomy with an additional cyclodialysis effect if the modified technique suggested by Watson is used. About 309 cases are reported, some of which were followed up for up to 12 years. No late failures or complications were observed. Failures are due to absence of the cyclodialysis effect. Regression of a bleb often occurs without any deterioration in intraocular pressure. The development of aqueous veins and scleral vessels around the incision is not uncommon. The causal relationship between postoperative hypotension and the development or spread of cataract is discussed.
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The b2-waves in the human electroretinogram provoked by blue- and orange-light stimulation can be united to a single scotopic wave. By this procedure a continuous demonstration of the adaptation process can be achieved beginning with the final point of the light adaptation.
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