On an improved optometer for estimating the degree of astigmatism and other errors of refraction
By: by John Tweedy
Contributors: Royal College of Surgeons of England
Publisher: The Lancet
Published: 1886
Place of publication: London
Language: eng
Number of pages: 11
Subjects: Astigmatism; Optometry
Notes: Reprinted from: Lancet (Apr. 24, 1886)

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.

The Royal College of Surgeons of England.