Note 1 - Description of Business and Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Number Of Vision Correction Centers Operated			59
Number Of Vision Correction Centers Licensed To Ophthalmologists Who Use Trade Mark			5
Period Over Which Patient Receivables Are Recovered			9 months
Receivable Balances That Remain Open Past Maturity Amount	$ 29,000		$ 29,000		$ 42,000
Allowance for Doubtful Accounts Receivable, Write-offs	287,000	296,000	751,000	712,000
Allowance for Doubtful Accounts Receivable, Recoveries	36,000	40,000	91,000	102,000
Patient Receivable [Member]
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Allowance for Doubtful Accounts Receivable	$ 1,400,000		$ 1,400,000		$ 1,700,000
Full Service Centers [Member]
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Number Of Vision Correction Centers Operated			51
Pre And Post Operative Centers [Member]
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Number Of Vision Correction Centers Operated			8
Minimum [Member]
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Period Over Which Patient Receivables Are Recovered			12 months
Maximum [Member]
Note 1 - Description of Business and Accounting Policies (Details) [Line Items]
Period Over Which Patient Receivables Are Recovered			36 months