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Acquisition of MISS Ophthalmics LTD (Details) (USD $)
3 Months Ended 0 Months Ended 3 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Jul. 08, 2013
M.I.S.S. Ophthalmics Limited [Member]
Oct. 31, 2013
M.I.S.S. Ophthalmics Limited [Member]
Business Acquisition [Line Items]        
Cash consideration     $ 2,800,000  
Contribution to revenue due to wholesale distribution activities     1,100,000  
Total revenue 15,530,000 14,620,000   3,200,000
Intellectual property     900,000  
Goodwill     $ 1,500,000