The relation of errors of refraction and insufficiency of the ocular muscles to functional diseases of the nervous system / by D.B. St. John Roosa.
License information
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
The relation of errors of refraction and insufficiency of the ocular muscles to functional diseases of the nervous system / by D.B. St. John Roosa. Credit: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.. Public Domain Mark