Exhibit 24

Information Regarding Joint Filers

Designated Filer of Form 3: Perceptive Advisors LLC

Date of Earliest Transaction Required to be Reported: 10/19/15

Issuer Name and Ticker Symbol: Aldeyra Therapeutics, Inc. [ALDX]

Names:	Perceptive Life Sciences Master Fund Ltd. and Joseph Edelman
Address:	Perceptive Advisors LLC
	499 Park Avenue, 25th Floor
	New York, NY 10022

Signatures:

The undersigned, Perceptive Life Sciences Master Fund Ltd. and Joseph Edelman, are jointly filing the attached Statement of Changes in Beneficial Ownership of Securities on Form 3 with Perceptive Advisors LLC with respect to the beneficial ownership of securities of Aldeyra Therapeutics, Inc.

PERCEPTIVE LIFE SCIENCES MASTER FUND LTD.

By: Perceptive Advisors LLC, its investment manager

By: /s/ Joseph Edelman

Joseph Edelman, managing member

JOSEPH EDELMAN

By: /s/ Joseph Edelman

Joseph Edelman