1. An inaugural essay, on the eye, and on vision: submitted to the examination of the Rev. John Andrews ..., the Trustees and medical professors of the University of Pennsylvania, on the 5th day of June, 1805, for the degree of Doctor of Medicine Author(s): De Butts, Elisha, 1773-1831 Publication: Philadelphia : Printed for the author, by John H. Oswald, 1805 Subject(s): EyeVision, Ocular
2. The eye: its imperfections and their prevention : comprising a familiar description of the anatomy and physiology of the organ of vision : rules for the preservation, improvement, and restoration of sight : with remarks on near sight and aged sight, on optics, and the use and abuse of spectacles, with directions for their selection Author(s): Powell, James W. Publication: New York : Published by the author, 1847 Subject(s): EyeVision, OcularVision Disorders -- prevention & control