San Juan Record | 1934-11-22 | Page 7 | Sees Kinship between Vitamins and Vision

sees kinship between vitamins and vision the manner in which the eye works particularly how it perceives what one knows as color Is s a very considerable mystery the puzzle ta la not very much clarified but Is pos made more interesting interest ns by the recent discovery that there Is a close relation between vitamin A and the ot of visual purple ID the retina it has long been known that visual purple which plays an important part in the functioning of the retinal rods Is sensitive to light bleaching to a colorless material when exposed to illumination watching this phenomenon dr george wald at the oceanographic institute woods hole muss dis covered that when the purple be comes transparent a slightly yellow material Is split off from it it this th material a hitherto unknown chem teal leal was found to be closely related to carotene which in turn is a close relative of vitamin A doctor wald then actually witnessed the transformation of the new diw yellow substance into vitamin A AS literary digest