Vitamin A Administration and Dark Adaption of Second and Third Grade Children
Description:
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.
Date:
1940
Creator:
Silk, Maurice Raper
Partner:
UNT Libraries