Ocuphire Pharma, Inc. announced it has received agreement from the U.S. Food and Drug Administration (FDA) under a Special Protocol Assessment (SPA) for the clinical trial protocol and planned statistical analysis of the LYNX-2 Phase 3 trial to evaluate phentolamine ophthalmic solution for the proposed indication for the treatment of decreased visual acuity under dim (mesopic) light conditions. Ocuphire received written agreement from the FDA that the clinical trial protocol and planned statistical analysis of the LYNX-2 Phase 3 trial of phentolamine ophthalmic solution could adequately address objectives supporting regulatory submission and a potential future marketing application in this indication. LYNX-2 will be a multi-center, randomized, double-masked, placebo-controlled Phase 3 trial designed to evaluate the safety and efficacy of phentolamine ophthalmic solution in up to 200 patients in the U.S. The agreed primary endpoint will be a gain of 3 lines (or 15 letters) or more of distance vision improvement on a low contrast chart in dim light conditions after 15 days of dosing.