Better Eyes For
A BETTER LIFE
The physicians and employees of Ophthalmic Associates, in keeping with the principles set forth by the American Medical Association and the American Academy of Ophthalmology, pledge to strive for optimal eyecare for every patient. We are committed to helping our patients see as well as possible by maintaining the highest degree of excellence in ophthalmic care.
All members of Ophthalmic Associates work together to provide leadership by advocating quality patient care, fair and equal employment practices and social responsibility to care for those in need.
What Our Patients Are Saying
Excellent experience here. I called because I had a tiny piece of metal stuck in my eye & they were able to see me the same day. The doctor found & removed ...
Can't say enough good things about Ophthalmic Associates and Dr. Sieber! She is truly a gem! Completed my final cataract post-op appointment today. All is great! Dr. Sieber, the office ...
My 3 year old has been in glasses for 2 years now and I recently had to find him a new optometrist. We came to Dr. Christian and I can’t say ...
Thaddeus Nowinski M.D.
Thaddeus Nowinski, M.D. is a graduate of the University of Scranton and Jefferson Medical College. He completed an internship at Pennsylvania Hospital and his residency at Wills Eye Hospital.
Colleen Christian, M.D. is a graduate of the University of California, Los Angeles, and Case Western Reserve University School of Medicine.
Thomas J. O’Connor M.D.
Thomas J. O’Connor, M.D. is a graduate of Boston College. He completed his medical training at Tufts University School of Medicine, and his ophthalmology residency training at Eye and Ear Hospital at the University of Pittsburgh.
Geoffrey P. Schwartz M.D.
Geoffrey P. Schwartz M.D. is a graduate of Bowdoin College, Columbia University and Jefferson Medical College.
Melissa R. Sieber
Melissa R. Sieber, M.D. is a graduate of Gettysburg College where she majored in physics with special interest in the medical applications of lasers.
Robert Gladnick, O.D. graduated from Pennsylvania’s College of Optometry and obtained his undergraduate degree from Philadelphia College of Textile and Science with a B.S. degree in Life Sciences.
Dr. Rebecca C. Dean, O.D. joined Ophthalmic Associates in February 2024. She is an optometrist who provides comprehensive eye care, including routine vision exams for adults and school-age children, contact lens exams for existing and new wearers, disease management, and emergency care.