Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

       We consent to the reference to our firm under the caption "Experts" and to the use of our report dated November 6, 2014 (except for the last paragraph in Note 1, as to which the date is January 28, 2015), in Amendment No. 3 to the Registration Statement (Form S-1 No. 333-201322) and related Prospectus of Avinger, Inc. for the registration of 4,615,384 shares of its common stock.

/s/ Ernst & Young LLP

Redwood City, California
January 29, 2015