Exhibit 5.1

September 19, 2014

GlassesOff Inc.

5 Jabotinski St. POB 12

Ramat Gan 5252006 Israel

Ladies and Gentlemen:

We have acted as special counsel for GlassesOff Inc., a Nevada corporation (the “Company”), in connection with the preparation of a Registration Statement on Form S-1, including the prospectus constituting a part thereof (as amended, the “Registration Statement”), being filed by the Company with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Securities Act”), relating to the registration for resale under the Registration Statement by the selling stockholders named therein of an aggregate of 5,000,000 shares of the Company’s common stock, par value $0.001 per share (“Common Stock”), comprising (i) 103,301 issued and outstanding shares of Common Stock (the “Issued Registered Shares”) and (ii) 4,896,699 shares of Common Stock that may be issued from time to time, pursuant to that certain Standby Equity Distribution Agreement, dated as of July 1, 2014 (the “SEDA”), by and between the Company and YA Global Master SPV Ltd., a Cayman Islands exempt limited partnership (the “Unissued Registered Shares” and, collectively with the Issued Registered Shares, the “Registered Shares”).

In connection with our representation of the Company, and as a basis for the opinions hereinafter set forth, we have examined originals, or copies certified or otherwise identified to our satisfaction, of the following (collectively, the “Documents”):

In rendering the opinions set forth below, we have assumed: (i) the genuineness of all signatures, the legal capacity of natural persons, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as duplicates or certified or conformed copies and the authenticity of the originals of such latter documents; (ii) each individual executing any of the Documents, whether on behalf of such individual or another person, is legally competent to do so; and (iii) each of the parties (other than the Company) executing any of the Documents has duly and validly executed and delivered each of the Documents to which such party is a signatory, and the obligations of each party set forth therein are legal, valid and binding obligations of such party and are enforceable against such party in accordance with all stated terms.

As to matters of fact, we have relied upon the Documents and, solely to the extent we deemed reasonably appropriate, upon representations or certificates of officers or directors of the Company, without independently verifying the accuracy of such documents, records and instruments.

GlassesOff Inc.

September 19, 2014

Page 2

Based solely upon and subject to the foregoing, and subject to the assumptions, limitations and qualifications stated herein, we are of the opinion that the Registered Shares have been duly authorized for issuance by the Company, and (i) the Issued Registered Shares are validly issued, fully paid and non-assessable and (ii) when issued and delivered by the Company pursuant to the SEDA against payment of the consideration therefor as set forth therein, the Unissued Registered Shares will be validly issued, fully paid and non-assessable.

This opinion letter is limited to the matters stated herein, and no opinions may be implied or inferred beyond the matters expressly stated herein. We assume no obligation to supplement this opinion if any applicable law changes after the date hereof or if we become aware of any fact that might change the opinion expressed herein after the date hereof.

We do not express any opinion herein concerning any law other than the laws of the State of Nevada and the federal laws of the United States.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the use of the name of our firm therein. In giving this consent, we do not admit that we are within the category of persons whose consent is required by Section 7 of the Securities Act or the rules and regulations of the Commission promulgated thereunder.