Efficacy-Results-of-Phase-2b-Study-Investigating- Drop-Combinations-for-the-Treatment-of-Presbyopia Efficacy Results of Phase 2b Study Investigating Drop Combinations for the Treatment of Presbyopia – George Waring IV, MD Previous image Next image Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName* Email* Website Save my name, email, and site URL in my browser for next time I post a comment. Notify me of new posts by email.