Dr. Keenan is a Board Certified Eye Surgeon and fellowship trained Cornea Specialist. Dr. Keenan confines his practice exclusively to refractive surgery/corneal consultations, and has performed well over 12,000 LASIK procedures. Dr. Keenan received his medical degree from Georgetown University School of Medicine in Washington, D.C., and then went on to complete his ophthalmology residency at The New York Hospital/ Cornell Medical center in Manhattan, New York. Dr. Keenan served his cornea fellowship with the University Ophthalmic Consultants of Washington, D.C. and also proudly served as both Battalion and Regimental surgeon in the Second Marine Division while he was a medical officer in the United States Navy.

Dr. Keenan is considered one of the leading and most experienced LASIK/refractive surgeons in the country and has been performing LASIK since 1996. Dr. Keenan is a member of the hospital staff at Lower Bucks Hospital and the Wills Eye Surgery Center and has held academic positions at the Georgetown University Hospital. Dr. Keenan has authored multiple articles/chapters in leading Ophthalmology journals and textbooks and has been a featured guest on WPHT radio, The Big Talker, here in Philadelphia.

Dr. Keenan is a member of the following associations and societies:
-Diplomate, American Board of Ophthalmology
-Fellow, American Academy of Ophthalmology
-Member, American Society of Cataract and Refractive Surgeons
-Member, International Society of Refractive Surgery of the American Academy of Ophthalmology
-Member, Pennsylvania Academy of Ophthalmology
-Member, Pennsylvania Medical Society
-Member, Bucks County Medical Society
-Member, American Medical Association