Abstract
A short-pulse, small-spot xenon arc coagulation technique, worked out on rabbits as described in a preceding paper, has been applied to humans with good results. The lesions can be made to resemble in most respects to those generated by weak ruby laser pulses, insofar as the choroid and the nerve fiber layer are not damaged, resorption of edema is rapid and pigment proliferation abundant. The technique consists in superposing the cathode hot-spot of the xenon arc by its mirror image, using small field stops and electronically controlled exposure times of typically 0.1 sec. The apparatus used was the photocoagulator of Zeiss-Oberkochen equipped with the optical attachement which allows of working with the Goldmann contact glass. Detailed description of some cases treated illustrates this method.
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