Dr. Tina Xia

Dr. Ayan Chatterjee is a glaucoma and cataract specialist who helps patients protect and restore vision with individualized, evidence-based care. He treats glaucoma with medical, laser, and surgical options, including minimally invasive glaucoma surgery (MIGS) and other procedures designed to lower eye pressure while supporting a smooth recovery. He also performs cataract surgery, including laser-assisted techniques and lens options that can address astigmatism and reduce dependence on glasses when appropriate. Dr. Chatterjee earned his undergraduate degree from Princeton University and received his medical degree from the Perelman School of Medicine at the University of Pennsylvania. He completed ophthalmology residency training at Wills Eye Hospital and additional fellowship training at Duke University Medical Center. In the clinic, he focuses on clear communication and shared decision-making so patients understand their choices and feel confident in their care plan.

Dr. Shelley X. Mo is a glaucoma specialist and comprehensive ophthalmologist at Eye Doctors of Lancaster. She graduated summa cum laude from Northwestern University with a dual focus in Biological Sciences and Mathematics, earned her MD at the Icahn School of Medicine at Mount Sinai, and completed internship at Mount Sinai St. Luke’s–West. She went on to ophthalmology residency and glaucoma fellowship at the University of Pittsburgh Medical Center, developing advanced skills in medical, laser, and surgical glaucoma care as well as cataract surgery. Dr. Mo offers the full spectrum of glaucoma management, including minimally invasive glaucoma surgery and laser therapies, and performs cataract surgery with advanced technology lens options for patients seeking to reduce dependence on glasses. She enjoys partnering with patients through clear education and thoughtful, personalized treatment plans designed to preserve vision and support long-term eye health.

Dr. Lindsay Machen is a fellowship-trained ophthalmologist who cares for adults with glaucoma and a full range of general eye conditions. A Pennsylvania native, she enjoys helping patients understand their diagnoses and options, from monitoring early disease to planning surgery when needed. She offers cataract surgery with advanced technology lens options and provides medical and surgical care for conditions such as dry eye and diabetes-related eye disease. Dr. Machen graduated magna cum laude from Bucknell University before earning her medical degree at the Pennsylvania State University College of Medicine, where she was inducted into Alpha Omega Alpha. She completed an internship at Reading Hospital, ophthalmology residency at the Illinois Eye and Ear Infirmary—serving as chief resident—and a glaucoma fellowship at Wills Eye Hospital. In addition to her clinical work, she has led efforts to modernize ophthalmology education and uses clear, practical teaching to guide patients through every step of care.