|Institution:||North Texas State Teachers College|
|Keywords:||dark adaption; Vitamin A; children; Night vision.; Eye – Adaptation.; Vitamin A – Therapeutic use.|
|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.