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The Use of the Bio-Photometer in Determining the Dark Adaptation of Pre-School Age Children

Description: Because of the paucity of evidence with regard to dark adaptation and the vitamin A status of pre-school children, this study is made. The purpose, therefore, is to add to the available data on this subject through an investigation of the bio-photometer as a means of detecting vitamin A deficiency in pre-school children.
Date: 1941
Creator: Wright, Mary Lou McCauley
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Dark Adaptation Studies with Adults and Children, Using the Biophotometer

Description: The present study is a part of a long-time cooperative study of the Home Economics Department of the North Texas State Teachers College, begun in 1940. The purpose is to compare the dark adaptations of second and third-grade children made in 1940 with those made of the same children in 1941 and in 1942. Also included in this study is the comparison of a group of freshmen college men made in 1940 with a group of twenty-five men made in 1942. An attempt is also made to determine whether an indivi… more
Date: 1942
Creator: Collins, Mary Margaret
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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