Grand Rapids Ophthalmology is fortunate to have three excellent corneal specialists including Mark Sheldon MD, Thomas Cowden MD and Marcus Muallem MD. The corneal team provides unprecedented medical treatment for patients with corneal problems.

In addition, GRO is pleased to announce that Dr. Muallem now performs the newest and most advanced form of endothelial transplantation (Descemet membrane endothelial keratoplasty (DMEK). Click Here To Learn More about DMEK

Their goal is to provide exceptional care to maintain eye health including the latest procedures and options in laser, medical and drug therapy.

Thomas Cowden, MD
Dr. Cowden is fellowship-trained in cornea/external diseases and refractive surgery and has performed thousands of Custom and BLADE-FREE LASIK procedures. He also performs corneal transplants, cataract surgery including LifeStyle Lenses, and anterior segment reconstruction. Dr. Cowden received his undergraduate degree from the University of Michigan, his medical degree from Wayne State University School of Medicine, completed his Ophthalmology Residency at the University of Wisconsin, and his subspecialty Fellowship in Corneal and Refractive Surgery at the University of Minnesota. He has been in private practice since 1997.


Marcus Muallem, MD
Dr. Muallem has a dual fellowship in cornea as well as glaucoma. He performs Custom BLADE-FREE LASIK, Traditional LASIK and PRK. Dr. Muallem’s sub specialty training in both fields were completed at the prestigious Bascom Palmer Eye Institute in Miami. He also performs the most modern no-stitch and small incision cataract surgery utilizing traditional intraocular lenses, toric implants for astigmatism, and premium multi-focal lenses including LifeStyle Lenses. He specializes in glaucoma and cornea surgery including corneal transplants. His residency was completed at the University of Illinois in Chicago. Dr. Muallem is well published in peer reviewed literature and has presented his research at national and international meetings. He specializes in glaucoma and cornea surgery including corneal transplants. Dr. Muallem is one of a select few doctors using the DMEK procedure, a revolutionary process for the best possible results.


Mark Sheldon, MD
Dr. Sheldon is a fellowship trained corneal specialist and sees patients for medical eye exams. In addition, he performs certain specialized procedures for post-cataract, post-refractive and unique surgical situations. We are proud to acknowledge him as the founder of The Cherry Street Eye Clinic, where he also performs pro bono eye surgery for the uninsured. Dr. Sheldon obtained his undergraduate degree from The University of Michigan and graduated from The Kresge Eye Institute of Wayne State University where he also completed a corneal fellowship. He has been in private practice since 1985.