If a child who is unable to see distinctly is placed in a school where physical defects are unrecognized and disregarded, headaches, eyestrain, and failure follow all his efforts at study.
"Health Work in the Public Schools"
Leonard P. Ayres and May Ayres
When the children attempt to do their school work while suffering from these defects, among the results may be counted permanent injury to the eyes, severe injury to the nervous system due to eyestrain, and depression and discouragement, owing to inability to see and hear clearly.
"Health Work in the Public Schools"
Leonard P. Ayres and May Ayres
The description that Hearn gives somewhere of the "sombre yellowish glow, suffusing the dark, making objects dimly visible, while the ceiling remained pitch black, as if the air were changing colour from beneath," is a phenomenon familiar to all who have suffered from eyestrain.
"Lafcadio Hearn"
Nina H. Kennard