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Further Studies on the Dark Adaptation of Elementary School Children

Description: The present study is part of a long time cooperative study of the Education and Home Economics Departments of 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 in 1941, and to determine also the dark adaptation of a group of fifth and sixth grade children receiving vitamin A concentrate.
Date: 1941
Creator: Gary, Lois W.
Partner: UNT Libraries

The use of the bio-photometer in determining the dark adaptation of pre-school age children

Description: The degree to which the normal eye can adapt to the dark is related to or dependent upon the eye's ability to regenerate visual purple. The relationship of vitamin A to the visual cycle has caused much development in improved methods of detecting vitamin A deficiency. For the most part these methods have been applied to adults and school age children. This study seeks to analyze this method as applied to pre-school age children.
Date: August 1941
Creator: Wright, Mary Lou McCauley
Partner: UNT Libraries

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
Partner: UNT Libraries