(207) 773-3937

195 Fore River Parkway, Suite 480, Portland, ME

Our Hours

Our current office hours are listed below.
Monday - Friday: 8:00 AM to 5:00 PM
Saturday, Sunday & Holidays: Closed

Fore River Medical Building - Mercy Hospital Portland, Maine

About the Retina Center of Maine

Retina Center of Maine has been treating patients with diseases of the retina since 1998 and is one of Maine's few retina only specialty practices. Our retina surgeons are fellowship trained in retina and are board certified. We utilize the latest technology to diagnose retinal diseases and use modern techniques to manage and treat those problems.

We specialize in diseases of the macula, retina and vitreous including diabetic retinopathy, vitreous hemorrhage, age related macular degeneration, macular pucker, macular edema, vein occlusions, retinal detachment, retinal tear, and retinal holes. Click here to learn more about making an appointment.

The Retina Center of Maine provides emergency care for patients across Northern New England who have diseases of the macula, retina and vitreous and need urgent evaluation and treatment.
Click here for emergency information.


Mark Balles, MD of the Retina Center of Maine

Mark Balles, MD


Dr. Balles completed fellowship training in retina surgery at Harvard Medical School, Massachusetts Eye and Ear Infirmary and is a graduate of Amherst College and the College of Medicine at the State University of New York in Syracuse.

Following surgical fellowship training in Boston, Dr Balles became the Director of the Retina Service at the University of Minnesota Medical School where he took care of patients with serious retinal diseases from across a five state area in the Midwest. He also was involved in several cutting edge clinical research projects including complex retinal detachments, intra-ocular pharmacotherapy, and served as a National Eye Institute co-Principal Investigator in several multi-center trials investigating treatments for Diabetic Retinopathy and severe intra-ocular infection (endophthalmitis).

He has brought the most recent innovations in retinal care to our area, including small incision vitreo-retinal surgery and advances in pharmacotherapy for macular degeneration and diabetic eye disease. Clinical experience from our practice has been presented at the New England Ophthalmologic Society and at the annual meeting of the American Society of Retina Specialists. Dr Balles established the advanced vitreo-retinal surgery programs at Maine Medical Center, Eyecare Medical Group, and Mercy Hospital. He has been involved in the training of medical students and dozens of nursing and surgical technician students.

Dr Balles is a fellow of the American Society of Retina Specialists and Board Certified by the American Board of Ophthalmology. He is proud of our reputation for excellent care demonstrated by the many doctors who send their retina patients to us, and the patients who come from all over Northern New England.

The Retina Center of Maine takes pride in the fact that we have a highly experienced staff, offer the most current therapies available and pursue the latest in medical education to achieve these goals.

Our ophthalmic technician staff are specialized in the care of patients with diseases of the macula, retina and vitreous. Our practice advocates continuing education for the staff and doctor to keep abreast of the latest advances in medical and surgical care.

Our administrative staff includes a Certified Professional Coder, and we are here to help with any insurance related issues.