Optical Defects in School Children
Williams, Henry W. Excerpt from Optical Defects in School Children: An Address Before the Massachusetts Teachers Association at Its Annual Meeting, October 17, 1868
I would show, also, that the threatened misfortunes must be averted through the intelligence and vigilance of teachers, since, in many instances, the pupil himself will make no complaint, but will even be unconscious of the dangers he is incurring till the mischief is beyond repair.
Within a very f...