Sims, C N <br/><br/>
The Jackson cross cylinder disproved.  [electronic resource] 

 -  Transactions of the American Ophthalmological Society  1986 
 - 355-86 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0065-9533 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astigmatism--diagnosis<br/>Equipment and Supplies<br/>Humans<br/>Mathematics<br/>Optics and Photonics<br/>Photography<br/>Refraction, Ocular<br/>Video Recording