He rubbed his eyes, thinking it might be a swirling of the night mist or a defect of vision.
"Tom Swift Among The Diamond Makers" by Victor Appleton
There is nothing to show, however, that the ancients ever thought of using them to correct defects of vision.
"A History of Science, Volume 2(of 5)" by Henry Smith Williams
Lincoln's defects in 1860 limited his vision.
"Lincoln" by Nathaniel Wright Stephenson
This was one of but many defects in his vision.
"Garrison's Finish" by W. B. M. Ferguson
Perhaps her other senses were acute enough to compensate in a measure for her defective vision.
"Birds and Poets" by John Burroughs
The More Common Defects of Vision.
"A Practical Physiology" by Albert F. Blaisdell
Such a condition produces a serious defect of vision.
"The Science of Human Nature" by William Henry Pyle
Our vision is often defective.
"Modern Eloquence: Vol II, After-Dinner Speeches E-O" by Various
Observe a schoolroom of children at work with the aim of discovering any that show defects of vision or hearing.
"The Mind and Its Education" by George Herbert Betts
Adenoids and defective vision are preventable, but not contagious.
"Civics and Health" by William H. Allen