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This, the first International Optical Congress, was held in Kings College, London, from July 9 until July 13, 1951. There were 800 registrations received from 24 countries, including the United States. The papers cover a wide variety of subjects, including the ophthalmoscope, physiological optics, accommodation and convergence, binocular vision and stereopsis, refraction, orthoptics, and contact lenses, with a few papers on general subjects, such as vision and the vehicle driver, and the etiology of migraine.
The British Optical Association Foundation Lecture was delivered by Mr. J. Z. Young, on "Visual Perception in Relation to Speech." The papers range enormously in intellectual level, as would be expected. For example, a paper on the clinical uses of the ophthalmoscope would be suited to the student beginning his course in ophthalmology. On the other hand, a paper such as "The Significance of Luneberg's Contribution to Physiological Optics" requires a knowledge of optics which