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Enterprise-wide Sales Information (Tables)
 3 Months Ended
Oct. 31, 2013
Enterprise-wide Sales Information [Abstract]  
Enterprise-wide sales information
Enterprise-wide sales information for the three months ended October 31, 2013 and 2012, respectively, consisted of the following:

 
 
Three Months Ended
October 31, 2013
  
Three Months Ended
October 31, 2012
 
Net Sales
 
  
 
Ophthalmic
 
$
8,498
  
$
8,662
 
OEM (1)
  
6,848
   
5,749
 
Other (2)
  
184
   
209
 
Total
 
$
15,530
  
$
14,620
 
Net Sales
        
Domestic
 
$
11,869
  
$
10,832
 
International
  
3,661
   
3,788
 
 
 
$
15,530
  
$
14,620
 

(1)Net sales from OEM represent sales of electrosurgery generators, disposable bipolar forceps and related accessories and royalties from Codman, multi-channel generators, disposable ultrasonic tips and related accessories to Stryker and sales of certain disposable products to Mobius Therapeutics LLC (“Mobius”).  In addition, deferred revenues of $322,000 from the 2010 settlement with Alcon, Inc. (the “2010 Alcon settlement”) are included in this category for the three months ended October 31, 2013 and 2012, respectively. However, as cash from the 2010 Alcon settlement has already been collected, it will not impact our future liquidity.
(2)Net sales from Other represent direct neurosurgery revenues and other miscellaneous revenues.