 Aldeyra Therapeutics, Inc. Nasdaq: ALDX Aldeyra, a clinical-stage biotechnology company focused on the development of novel therapies with the potential to improve the lives of patients with immune-mediated diseases, today announced that, based on preliminary written comments and meeting discussion, agreement has been reached with the US Food and Drug Administration FDA for the use of RASP reactive aldehyde species as an objective sign for the treatment of dry eye disease. 