Corboy, John M. <br/><br/>
The retinoscopy book :  An introductory manual for eye care professionals / 
J. M. Corboy. 
 - 3rd revised ed. 
 - Thorofare, NJ :  Slack Inc.,  1989. 
 - 123 p. :  ill. ;  29 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>1-55642-103-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ophthalmology