Refraction and how to refract
Subtitle: including sections on optics, retinoscopy, the fitting of spectacles and eye-glasses, etc.
By: by James Thorington.
Edition: 3rd ed.
Publisher: P. Blakiston's Son & Co.
Published: 1907
Place of publication: Philadelphia
Language: eng
Number of pages: 314
Subjects: Ophthalmology; Refraction, Ocular