Principles and practices of refraction
Subtitle: an elementary treatise on the science of refraction as applied to "sight testing" including essays on retinoscopy, astigmastism, ophthalmoscopy, asthenopia, frame fitting and muscular insufficiencies, etc. with illustrations
By: y Lionel G. Amsden
Publisher: The Canadian Optician
Published: 1903
Place of publication: Toronto
Language: eng
Number of pages: 224
Subjects: Eye; Accommodation and refraction; Refractive errors; Ocular Refraction; Refractive Errors; Œil; Réfraction; Vices de réfraction
Notes: Includes index.