Description of Business and Accounting Policies (Details) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Centres	Jun. 30, 2011	Dec. 31, 2011	Jun. 30, 2012 Patient receivable [Member]	Dec. 31, 2011 Patient receivable [Member]	Jun. 30, 2012 Maximum [Member]	Jun. 30, 2012 Minimum [Member]
Description of Business and Accounting (Textual) [Abstract]
Period over which patient receivables are recovered								36 months	12 months
Doubtful accounts on our patient receivables			$ 518,000	$ 316,000		$ 1,800,000	$ 1,700,000
Description of Business and Accounting (Additional Textual) [Abstract]
Number of vision correction centers operated			53
Number of vision correction centers licensed to supplier who use trade mark			2
Receivable balances that remain open past maturity amount	129,000		129,000		160,000
Receivables wrote-off against the allowance for doubtful	199,000	172,000	415,000	366,000
Receivables recovered which were previously written off	$ 32,000	$ 39,000	$ 62,000	$ 87,000