First Amendment to Supply Agreement by and between Sight Sciences, Inc. and Peter's Technology (Suzhou) CO. LTD. dated as of January 28, 2022

Exhibit 10.15

Certain information marked as [****] has been excluded from this exhibit because it is both (i) not material and (ii) is the type that the Registrant treats as private or confidential.

AMENDMENT #1

TO

SUPPLY AGREEMENT

This Amendment #1 to Supply Agreement (“Amendment”) is made effective as of January 28, 2022 (the “Amendment Effective Date”) and entered into by and between Sight Sciences, Inc., a Delaware corporation having a principal place of business at 4040 Campbell Ave., Suite 100, Menlo Park, California 94025 (“Buyer”) and Peter’s Technology (Suzhou) CO., LTD., a Suzhou, Jiangsu Province corporation, with its principal place of business at No. 99 Jishi East Road, Wu Jiang District, Suzhou City, Jiangsu Province, P.R. China 215200 (“Supplier”).

RECITALS

WHEREAS, Buyer and Supplier are parties to that certain Supply Agreement, effective as of January 14, 2020 (as the same has been or may be amended, the “Agreement”); and

WHEREAS, the Parties wish to amend certain of their respective rights and obligations under the Agreement as set forth herein.

NOW, THEREFORE, in consideration of the covenants contained herein, and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows:

AGREEMENT

3. Exhibit B shall be amended in its entirety and replaced with the attached Exhibit B as of the Amendment Effective Date.

4. All capitalized terms not defined in this Amendment shall have the meanings ascribed to such terms in the Agreement.

5. Unless specifically amended herein, all other terms and conditions of the Agreement, including the remainder of Exhibit A, shall continue in full force and effect.

The parties have caused this Agreement to be executed as of the Amendment Effective Date.

EXHIBIT A

PRODUCTS; PRODUCT PRICING

1. Products; Prices. Products and Product prices are as follows:

*[****]

Products are current revision in accordance with Buyer’s released specifications as further provided on Exhibit B.

EXHIBIT B

SPECIFICATIONS

1-102 OMNI Surgical System (US)

[****]

1-103 OMNI Surgical System (OUS)

[****]

1-104 OMNI Plus Surgical System (US)

[****]

1-105 OMNI Plus Surgical System (OUS)

[****]

5-117 SmartLids, Single Pair, Gen 1.5

[****]