Vitamin A Administration and Dark Adaption of Second and Third Grade Children
Institution: | North Texas State Teachers College |
---|---|
Department: | |
Year: | 1940 |
Keywords: | dark adaption; Vitamin A; children; Night vision.; Eye – Adaptation.; Vitamin A – Therapeutic use. |
Record ID: | 1578343 |
Full text PDF: | http://digital.library.unt.edu/ark:/67531/metadc75605/ |
This study was formulated for the following purposes: (1) To determine if a learning factor is involved when repeated tests are made with a dark adaption instrument, (2) To determine if the dark adaption of a group of second and third grade children showing poor dark adaption can be improved by the daily administration of Haliver oil capsules, (3) To obtain a dark adaption curve for two hundred twenty-three grade children of Denton, Texas.