Dr. Lillian To

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. Tina Xia is a glaucoma specialist at Wills Eye Hospital who provides medical, laser, and surgical care for patients with all stages of glaucoma. She partners closely with each patient to protect vision over the long term, explaining test results and tailoring treatment—whether a new drop, in-office laser, or surgery—to individual risk and lifestyle. In addition to caring for patients in the Philadelphia region, she teaches residents and fellows and contributes to glaucoma research. Dr. Xia graduated from Brown University and earned her medical degree from Yale School of Medicine, where she received honors for ophthalmology research. She completed internship and ophthalmology residency at Washington University in St. Louis, followed by a glaucoma fellowship at Wills Eye Hospital. Her clinical practice spans minimally invasive glaucoma surgery and traditional procedures, guided by the latest evidence and a calm, communicative approach.