Colorado Retina Associates is a fourteen physician, owned and led, sub-specialty eye care practice providing medical and surgical care of vitreoretinal eye disease. Colorado Retina provides comprehensive retinal treatment for age-related macular degeneration (AMD), diabetic retinopathy, retinal vascular disease, retinal detachments, ocular tumors, uveitis/inflammatory eye disease, inherited retinal degenerations and numerous other vitreoretinal conditions.
Uveitis refers to a group of inflammatory and infectious diseases in and around the eye, including iritis, pars planitis, scleritis, birdshot chorioretinopathy and retinal vasculitis. Patients often have systemic autoimmune conditions that are associated with their uveitis.
The macula is the part of the retina responsible for our most detailed central vision and is essential for precise vision. Age-related Macular Degeneration (AMD) is the leading cause of blindness in the US today, affecting approximately 10 million people.
A Retinal Vein Occlusion (RVO) involves blockage of blood trying to leave the eye through the retinal veins, commonly occurring in persons over the age of 55 years and is usually associated with high blood pressure, high cholesterol, diabetes, and/or cigarette smoking.
Diabetes is the leading cause of preventable blindness in the US. There are many ways in which diabetes impacts the eye, including swelling of the macula (the most important, central part of the retina), decreased oxygen delivery, and new growth and bleeding of diseased blood vessels.
An ERM (also known as macular pucker) is a growth of scar tissue over the macula, the portion of the retina providing central vision. Typically due to age related eye changes, ERM development is also associated with a retinal tear and detachment, eye trauma, and diabetes.
Inherited retinal diseases (IRDs) are a group of genetic disorders that affect the retina’s ability to transmit light-related information to the brain. Typically, IRDs cause a slow loss of vision, beginning with decreased night vision and loss of peripheral (side) vision.
The macula is the part of the retina responsible for our most detailed central vision and is essential for precise visual activities like reading and driving. A macular hole occurs when a full thickness defect develops in the very center of the macula, usually due to age related changes.
Intraocular tumors are evaluated with a variety of diagnostic imaging technologies to make a diagnosis and create a personalized clinical plan. Benign lesions are typically monitored but may be treated to improve vision. Malignancies are treated in coordination with oncology teams.
Many conditions can lead to a retinal detachment, in which the retina separates from the back wall of the eye. The typical symptoms of a retinal detachment include floaters, flashing lights, and a shadow in the peripheral vision that can move toward the center of vision.
"I couldn't have been more pleased with this appointment!"
Dr Courtney completely explained my condition and answered all my questions before I even gave him my list of questions. Dr Courtney is extremely kind and communicates very well, putting everything in simple to understand language. He is very reassuring, explains available treatment, and is very gracious and willing to be available to care for you in the future. Definite 5 star rating. Thank you Dr Courtney!!!!
"I'm back to seeing 20/20 again and couldn't be happier!"
I am so thankful for Dr. Courtney! I had multiple retinal tears that he repaired and, later, had a retinal detachment that he also corrected. His office staff has always been so helpful and he takes as much time as you need to understand your issues. Highly recommend Dr. Courtney!
"I highly recommend Dr. Adam and his associates!"
I recently had surgery to correct a macular pucker in my left eye. I am so grateful to have been referred to Dr. Adam and Colorado Retina Associates. Dr. Adam is probably the best doctor I've ever had, bar none. He is beyond competent, explains everything, is patient w/questions (even the repeated ones!) a great listener, kind and caring. In fact, the entire staff at CRA are amazing. They exemplify the best in how medicine should be practiced. I highly recommend Dr. Adam and his associates!
"From the moment I first set foot in the office I was treated with kindness, respect and care."
I was referred to Dr. Adam for a detached retina. From the moment I first set foot in the office I was treated with kindness, respect and care. Dr. Adam explained everything to me in a manner that made sense, every step of the way. After my surgery he was very hands on with my recovery journey and took a very practical, non-aggressive approach to my healing. He did not treat me just like another patient, he was always concerned and when I made strides in the right direction, he was just as happy and excited as I was. The whole staff is great, very easy to work with and super accommodating. I would recommend Dr. Adam and Colorado Retina Associates without hesitation every time. Thank you!
"Dr. Mimi Liu of Colorado Retina Associates is a surgeon of the highest professional expertise!"
For 5+ years I’ve avoided surgeries in both EYES because the surgery name ends with the word ‘PEEL’! OMG! Not only did Dr. Mimi Liu of Colorado Retina Associates meticulously perform this intricate, delicate surgery, but her confident-yet-gracious patient care skills quieted my many fears. She’s a surgeon of the highest professional expertise! If your eye doctor tells you that you need a macular membrane peel, immediately call Colorado Retina Associates and meet with Dr. Mimi Liu!
"Friendliest staff ever!"
They never keep you waiting and my Mom's doctor is very patient! Highly recommend!
Dr. Kimura was recommended by my doctor in Chicago. I am so glad he did!!! He keeps a close watch on my eye issues.
"Thanks for saving my vision."
I had a post vitreous detachment the last couple months and these guys it really helped me including Dr. Johnson. I have never seen such a well put together staff that work together to try to make everything right. Dr. Johnson is by far the most experienced doctor and retinal specialist I have seen in my entire life time. He is a dedicated doctor that is willing to put the work in to make sure that you and your health and I are completely safe.
A Wisconsin native, Dr. Adam joined the team in 2017. Colorado Retina provided the opportunity for Dr. Adam to collaborate with top retina physicians and surgeons to treat complex cases and contribute to advancements in clinical research. He applies his training and extensive experience to make a direct and meaningful impact on the lives of his patients.
Nancy J Christmas M.D. graduated from Wellesley College and Yale University School of Medicine. She went on to complete her medical internship at the Deaconess Hospital in Boston, ophthalmic residency at the world-renowned Bascom Palmer Institute and her medical and surgical retina fellowship at the University of Iowa Hospitals and Clinics. While in college, she became involved with research at the Massachusetts Eye and Ear Infirmary and she continues to be involved in national clinical research trials at Colorado Retina.
Dr. Courtney is a born and raised Colorado native, having grown up in Fort Collins, Colorado. He attended the University of Colorado in Boulder where he graduated with academic honors in Biochemistry. He then completed his medical school at the University of Colorado in Denver where he was inducted into the national medical honor society, Alpha Omega Alpha. He completed his ophthalmology residency at Casey Eye Institute, Oregon Health and Science University in Portland, Oregon. After completing his medical school and ophthalmology residency, Dr. Courtney moved to Cleveland, OH for his vitreoretinal fellowship at the Cleveland Clinic Foundation Cole Eye Institute, a national leader in vitreoretinal fellow training.
Dr. Mark Dacey has coordinated the uveitis service at Colorado Retina for the past decade, seeing patients with complex autoimmune and infectious ocular conditions. He is a full-time, fellowship-trained uveitis specialist, with areas of interest in scleritis, ocular cicatricial pemphigoid, retinal vasculitis, and orbital inflammation. The uveitis team at Colorado Retina is proud to be a tertiary referral center for patients in Colorado and eight surrounding states, from New Mexico in the south to North Dakota and Montana in the north.
Dr. Curtis Hagedorn is a native Coloradan, born in Loveland Colorado. He grew up in Colorado Springs and attended Colorado College for his undergraduate education. He then left the state for ten years as he attained his medical school degree from Rush University in Chicago and received eye surgery training and retinal surgery expertise at Yale University where he received the Marvin Sears award for clinical excellence.
Rare Colorado native, Dr. Peter Hovland is a renowned ophthalmologist, specializing in macular degeneration, diabetic retinopathy, vitreoretinal surgical conditions, and ocular oncology. He began his career as a vitreoretinal surgeon in practice with his father at our original Harvard location. After his father’s retirement, Dr. Hovland ultimately merged the family practice into what has now become Colorado Retina Associates, which he remains a founding partner.
Dr. David Johnson was born and raised in Northern Kentucky and he completed his undergraduate and medical education in his home state. Dr. Johnson has been fortunate to practice ophthalmology in his new adopted state of Colorado since 1985.
Brian C Joondeph completed his training as a retina surgeon in 1990 and since then has worked both in private practice and full-time academic ophthalmology. He practiced in Michigan for ten years before taking his family on a once-in-a-lifetime adventure to work and live in Auckland, New Zealand for several years. He has been in Denver for the past 15 years after returning from his academic retina position down under. Denver was a great fit for his family after New Zealand given the opportunity for outdoor adventure and sports.
A native of Chicago, Dr. Kimura came to Denver to start private practice in 1996, after a lengthy career in academia. He is an ophthalmology board-certified, vitreoretinal surgeon who treats an extensive amount of retinal diseases, such as macular degeneration, diabetic retinopathy, and vascular disorders. Dr. Kimura also has special interest and advanced training in the field of inherited retinal disease. In addition to his clinical work, he serves as president of Colorado Retina, and is one of the original remaining founding partners.
Coming to us from Scottsdale, AZ, Dr. Levison is one of the newest additions to our Colorado Retina physician team. Dr. Ashleigh Levison specializes in medical and surgical retina treatment, with special interest in uveitis. She primarily cares for patients with macular degeneration, diabetic eye disease, vascular occlusions, macular disorders, epiretinal membranes, vitreomacular traction and inflammatory eye disease, also known as uveitis. Currently, Dr. Levison sees patients at all of our six locations, across the Rocky Mountain region.
Dr. Mimi Liu is a partner at Colorado Retina Associates where she has practiced for the past thirteen years. Dr. Liu is a highly trained vitreoretinal surgeon, who treats a vast majority of retinal conditions. Her areas of expertise lie in repairing retinal detachments and tears, macular puckers, and macular holes. She also takes special interest in treating patients with diabetic retinopathy, retinal vascular disease and macular degeneration.
Dr. Mark E. Patron moved from the East Coast to Denver to join the Colorado Retina team in 2012. Dr. Patron is a highly trained, vitreoretinal surgeon who treats a wide variety of eye diseases, including retinal tears, retinal detachments, age-related macular degeneration, and more, as well as retinal manifestations of systemic disease. With advanced exposure during training, he takes special interest in diabetic retinopathy, especially surgical repair of complex diabetic tractional retinal detachments. Currently, Dr. Patron sees patients in 5 of our 6 Colorado locations and travels for appointments at our Goodland, KS office once a month.
My wife and I arrived in Denver in 2010 and are delighted to call Denver home. I practiced vitreoretinal surgery for 12 years before joining Colorado Retina Associates in 2019. Originally from New York, I attended college at Emory University where I obtained a Bachelor of Arts in English and subsequently attended medical school and residency at New York Medical College. I completed my vitreoretinal fellowship at the Vitreoretinal Foundation in Memphis, TN, a high-volume surgical program that laid the foundation of my surgical career.
Dr. Miriah Teeter is the latest addition to the Colorado Retina team, coming to us with over 11 years of practice experience as a fellowship trained vitreoretinal surgeon. Dr. Teeter has special expertise in medical and surgical treatment of retinal disease, with a focus on diabetic retinopathy, macular degeneration (AMD), retinal vascular occlusions, retinal detachment repair, and macular surgery.