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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.

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.

Dilru Amarasekera, MD, is a glaucoma specialist whose work bridges hands-on patient care with outcomes-focused research. At Wills Eye Hospital she serves as a Clinical Instructor in Ophthalmology for Sidney Kimmel Medical College and investigates risk factors for glaucoma development and progression using large data registries. Her scholarly interests include surgical outcomes after filtering procedures and minimally invasive glaucoma surgery as well as harmonizing glaucoma testing data across systems. She has presented and published on topics ranging from angle-closure and surgical techniques to trends in authorship and representation in ophthalmology. Dr. Amarasekera trained at Wills Eye Hospital, where she was elected chief resident, and is committed to thoughtful, collaborative care for patients with complex glaucoma. Recognized with awards from the American Glaucoma Society and others, she brings an approachable style and clear communication to every visit. Patients can expect careful monitoring, discussion of medical and surgical options—including MIGS and traditional filtering surgery—and a plan tailored to their goals and daily life.

Moon Jeong Lee, MD, is a fellowship-trained glaucoma and cataract surgeon who provides the full spectrum of medical, laser and surgical care for routine and complex glaucoma. She partners with patients to slow disease progression, protect vision and choose the least invasive option that will be effective—ranging from in-office laser treatments to minimally invasive glaucoma surgery (MIGS) and traditional procedures when appropriate. Dr. Lee also performs cataract surgery and offers combined approaches for people with coexisting cataract and glaucoma. Her academic work explores how vision loss intersects with aging and cognition, and she brings that perspective to personalized care that prioritizes safety, function and quality of life. Dr. Lee sees patients across Johns Hopkins locations and collaborates closely with optometrists and primary eye care providers to ensure smooth comanagement and continuity after surgery.

Dr. Elizabeth A. Dale is a board-certified ophthalmologist specializing in glaucoma and related disorders. She focuses on both medical and surgical management of glaucoma, including glaucoma laser procedures, traditional glaucoma surgical techniques, and state-of-the-art minimally invasive glaucoma surgery. Dr. Dale also performs cataract surgery. Dr. Dale joined Ophthalmic Partners in 2015 after completing a clinical glaucoma fellowship through the prestigious Bascom Palmer Eye Institute at the University of Miami. She is an Attending Physician on the Glaucoma Service at Wills Eye Hospital and a Clinical Instructor of Ophthalmology at Thomas Jefferson Medical College, where she is responsible for clinical and surgical training of residents and fellows. She lectures locally and nationally and serves as an instructor for the American Academy of Ophthalmology’s annual trabeculectomy surgery course. Dr. Dale strives to develop strong relationships with her patients to foster a collaborative environment. She incorporates traditional glaucoma interventions as well as the latest technology to provide care that is tailored to the needs of each individual. She is a member of the American Academy of Ophthalmology, American Glaucoma Society, American Society of Cataract and Refractive Surgeons, Greater Philadelphia Ophthalmic Society, and Women in Ophthalmology.

Lillian Khowong To, MD, is a glaucoma specialist at the UPMC Vision Institute. She completed her medical degree and ophthalmology residency at the University of Pittsburgh School of Medicine, followed by subspecialty fellowship training in glaucoma at the University of Texas Health Science Center at Houston. Dr. To provides comprehensive, longitudinal care for patients living with glaucoma, focusing on early detection, pressure-lowering therapies, and preserving quality of life. She partners closely with each patient to tailor medication plans, discuss laser and surgical options when appropriate, and coordinate care with primary and specialty providers. Patients can expect thorough testing, clear explanations, and a team-based approach to long-term follow-up. Dr. To welcomes adults of all ages and is committed to delivering compassionate, evidence-based care through the UPMC system.

Dr. Joshua Paul is a board-certified ophthalmologist, glaucoma subspecialist, and laser cataract surgeon with OCLI Vision. He provides comprehensive eye care with a focus on refractive cataract surgery and both minimally invasive and traditional surgical management of glaucoma. Dr. Paul completed his undergraduate education at Pennsylvania State University and earned his medical degree from Drexel University College of Medicine in Philadelphia. He went on to an ophthalmology residency at Temple University Hospital, where he served as chief resident and set a program record for the number of cataract surgeries performed during residency. He then completed a glaucoma fellowship at the University of North Carolina at Chapel Hill, training with internationally recognized glaucoma experts. Dr. Paul offers a full spectrum of cataract and glaucoma treatments, including advanced intraocular lens options, laser cataract surgery, glaucoma laser procedures, and surgical glaucoma interventions, along with ongoing medical management. He is active in professional societies and research, and is known for taking time to explain diagnoses and treatment options so patients feel informed and confident in their care.

Dr. Michael C. Izzo is a board-certified ophthalmologist and fellowship-trained glaucoma specialist at Berks Eye Physicians & Surgeons. He cares for adults with the full spectrum of glaucoma, offering individualized plans that span advanced medications, modern laser options, and surgical procedures to preserve sight. In addition to glaucoma care, Dr. Izzo performs small-incision cataract surgery and offers premium lens implant options, including presbyopia-correcting and toric IOLs, to reduce the need for glasses and improve visual quality. Patients value his clear explanations, compassionate bedside manner, and team-based approach to long-term eye health. Dr. Izzo completed a glaucoma fellowship at Wills Eye Hospital after serving as Chief Resident during his ophthalmology residency at MedStar Georgetown University Hospital. He earned his medical degree from the Lewis Katz School of Medicine at Temple University and holds a biology degree from Boston College. He joined Berks Eye in 2023 and is committed to bringing leading-edge glaucoma and cataract care to the community.

Dr. Lauren E. Hock is a fellowship-trained glaucoma specialist at Wills Eye Hospital and an assistant professor of ophthalmology at Sidney Kimmel Medical College. She provides comprehensive, patient-centered care for the full spectrum of glaucoma, from early detection and medical therapy to advanced laser and surgical options. Patients value her clear explanations and thoughtful, team-based approach to protecting vision over the long term. Dr. Hock completed glaucoma fellowship training at Wills Eye Hospital after ophthalmology residency at the University of Iowa Hospitals & Clinics and medical school at Rush Medical College. Her work has been recognized with honors including the Rick Bay Excellence in Eyecare Education Scholarship and the Hansjoerg E. Kolder Memorial Humanitarian Award. She is committed to education and innovation in glaucoma care for patients across the Philadelphia region.

Dr. Zachary Nadler is a glaucoma specialist at the UPMC Vision Institute who provides comprehensive medical and surgical care for patients with all stages of glaucoma. He emphasizes early detection, personalized therapy, and careful long-term monitoring to help preserve vision and quality of life. Patients can expect clear explanations, thoughtful discussions about options, and coordination with their other eye-care providers when needed. Dr. Nadler serves on the Glaucoma Service and is an Assistant Professor in the Department of Ophthalmology at the University of Pittsburgh. He completed ophthalmology residency training at the University of Pittsburgh, earned his MD at the Lewis Katz School of Medicine at Temple University, and studied physics and mathematics as an undergraduate at Emory University. His clinical interests span medical therapy, laser treatments, and surgical approaches—including modern minimally invasive options—matched to each patient’s disease severity and goals.

Dr. Tadhg Schempf is a board-certified ophthalmologist who grew up in Pittsburgh and completed his ophthalmology residency at UPMC, followed by a glaucoma fellowship at the same institution. His extensive training allows him to treat a wide range of eye conditions with a focus on glaucoma and retinal diseases. Dr. Schempf is actively involved in research, having investigated social determinants of health in glaucoma, telehealth effectiveness, retinal imaging, oculoplastic surgical approaches, and intraocular lens techniques. He has published numerous peer-reviewed articles and participates in community outreach through the Guerilla Eye Service and Mission of Mercy. He joined Sewickley Eye Group to serve the community of his hometown, Pittsburgh. His wife, Molly, is from Sewickley, and they enjoy running, biking, hiking with their dog, and spending time with family and friends. Dr. Schempf is dedicated to providing high-quality, compassionate care to every patient.

Dr. Victoria M. Addis is a glaucoma specialist who helps patients preserve vision with individualized plans that combine the least invasive effective treatments with vigilant follow-up. She offers office-based laser procedures and modern microinvasive glaucoma surgery (MIGS), collaborates on cataract co-management when appropriate, and counsels patients on long-term pressure control and medication strategies. Her style is thorough and reassuring—she explains each step, expected results, and alternatives so patients can choose confidently. Dr. Addis completed medical school at Jefferson Medical College, ophthalmology residencies at Albert Einstein Medical Center and Washington Hospital Center, and fellowship training in glaucoma at the University of Michigan’s W.K. Kellogg Eye Center. At Penn Medicine’s Scheie Eye Institute, she also contributes to resident education and program leadership. She treats the full spectrum of glaucomas, from ocular hypertension to complex secondary and neovascular disease, and uses technology and team-based care to keep treatment as simple and safe as possible.

Dr. Reza Razeghinejad is a glaucoma specialist at Wills Eye Hospital and director of the Glaucoma Fellowship Program. He provides comprehensive medical, laser, and surgical care for glaucoma and also manages complex cataracts, bringing a meticulous, research-informed approach to each case. Patients value his ability to explain options clearly and align treatment plans with their goals and daily routines. With advanced fellowships in glaucoma and a strong record of clinical research, Dr. Razeghinejad offers the full range of modern glaucoma procedures—from laser therapies and MIGS to trabeculectomy and drainage implants. He collaborates closely with referring doctors and families to protect vision over the long term while minimizing treatment burden.

Dr. Ana Rubin Panvini is a glaucoma specialist who treats the full range of glaucoma and cataract conditions, from early disease to complex cases. She offers individualized medical therapy, laser procedures, and both minimally invasive and traditional surgeries, explaining each step so patients feel confident in their care. Her approach emphasizes safety, comfort, and long-term vision preservation. Originally from Venezuela, Dr. Panvini moved to the United States as a teenager and later earned her medical degree at Penn State College of Medicine. She completed fellowship training at the University of Iowa and cares for adults of all ages at Geisinger. In addition to cataract surgery, she performs MIGS and incisional glaucoma procedures and provides advanced laser treatments tailored to each patient’s needs.

Dr. Rajesh Sasikumar is a glaucoma specialist and associate professor of ophthalmology who cares for patients with the full spectrum of glaucoma—from early diagnosis to complex, surgical disease. He offers medical, laser, and surgical options and tailors each plan to a patient’s goals and lifestyle. As Co-Director of Clinical Trials, he helps bring promising therapies from research into real-world care and ensures patients have access to advanced treatments when appropriate. Dr. Sasikumar’s training spans leading eye centers across Asia and Australia, giving him a broad, practical perspective on how to manage challenging glaucoma presentations. He routinely performs procedures such as trabeculectomy, tube shunts, combined cataract–glaucoma surgery, and minimally invasive glaucoma surgery (MIGS). Patients appreciate his clear explanations, careful follow-up, and focus on preserving vision and independence over the long term.