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To the Editor:
—Several years ago Dr. Max Chamlin was kind enough to allow me to observe his methods in New York. I have always been very appreciative of Dr. Chamlin's efforts. He gave unsparingly of his time and knowledge At the time Dr. Chamlin was using a single target on a paddle, such as he has described in an article. I do not recall his using more than one target on a paddle.A few years ago when I was attempting to find a technique of testing for visual extinction with standardized targets, I utilized Dr. Chamlin's paddles and used multiple targets on the paddles. From this it was only a short step to using it with the tangent screen. When I scanned the literature in preparation for writing my paper, I went through several articles and also went through the article mentioned by Dr. Chamlin. I missed his
Zeller RW. MULTIPLE TARGETS IN VISUAL FIELD EXAMINATIONS WITH A TANGENT SCREEN. AMA Arch Ophthalmol. 1959;62(1):152-153. doi:10.1001/archopht.1959.04220010155020