Childress, M E <br/><br/>
Possible effects of visual demand on refractive error.  [electronic resource] 

 -  Journal of the American Optometric Association  Apr 1970 
 - 348-53 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0003-0244 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Female<br/>Humans<br/>Male<br/>Occupations<br/>Refractive Errors--epidemiology