Francis I. Proctor Foundation
Cathy Q. Sun, MD
Associate Professor of Ophthalmology · She/Her/Hers
Dr. Cathy Sun is a glaucoma specialist whose research harnesses big data and pragmatic clinical trials to improve the diagnosis and treatment of glaucoma and other eye conditions. Her work uses electronic health records and natural language processing to study clinical outcomes, builds and implements clinical decision support software, and develops prediction models for ocular disease.
Research
The Sun Lab harnesses the power of "real-world" data to improve diagnosis, treatment, and outcomes across ophthalmology. Current work spans three areas:
Real-world data for better outcomes
- Diabetic retinopathy: prediction models for disease progression, the role of social determinants of health, and decision-support tools for patients and clinicians
- Glaucoma: emulating randomized trials with observational data, improving neovascular glaucoma outcomes, laser trabeculoplasty results, post-tonometry infection rates, and risk factors for acute angle closure
- Cataract: the impact of telehealth on post-operative care and risk factors for zonulopathy
- Pterygium: outcomes of office-based pterygium surgery
Unlocking the potential of clinical notes
- Automated classification using natural language processing and large language models for diabetic retinopathy and glaucoma
- Comparing diagnosis codes with automated approaches for selecting patient cohorts
- Better detection of disease duration and social determinants of health from clinical notes
Registry-based randomized controlled trials (RRCTs)
- Laying the foundation for future registry-based randomized controlled trials in ophthalmology
Areas of Expertise
- Glaucoma diagnosis and treatment
- Big-data and real-world-evidence research
- Electronic health records, natural language processing & large language models
- Clinical decision support and prediction modeling
- Pragmatic and registry-based clinical trials
Education
- Stanford University, BS, Biological Sciences — 2008
- University of California, San Francisco, MD, Medicine — 2014
- California Pacific Medical Center, Medicine Internship — 2015
- University of California, San Francisco, Ophthalmology Residency — 2018
- Bascom Palmer Eye Institute, Glaucoma Fellowship — 2019
Selected Publications
For her complete and current list, see her UCSF Profiles page.
2025
- Liu J, Kim IM, Chen EM, Porco TC, McLeod SD, Gazzard G, O'Brien KS, Sun CQ. Open-Angle Glaucoma Treatment Preferences of US Glaucoma Specialists. Journal of Glaucoma. 2025.
- Kim IM, Radgoudarzi N, Chen EM, Liu J, Moussa K, Shantha JG, Tsui E, Gore C, Baxter SL, Porco TC, Arnold BF, Sun CQ. Time to Progression to Proliferative Diabetic Retinopathy in Patients With Type 2 Diabetes. JAMA Network Open. 2025;8(7):e2521150.
- Lawlor M, Sun CQ, Gazzard G. Registry-based randomised controlled trials in glaucoma: the time is right? British Journal of Ophthalmology. 2025;109(5):533–534.
2024
- Sun CQ, Acharya NR. Navigating the Realm of Claims-Based Research. Ophthalmology. 2024;131(10):1139–1142.
- Yonamine S, Ma CJ, Alabi RO, Kaidonis G, Chan L, Borkar D, Stein JD, Arnold BF, Sun CQ. Comparison of Diagnosis Codes to Clinical Notes in Classifying Patients with Diabetic Retinopathy. Ophthalmology Science. 2024;4(6):100564.
- Chen JS, Copado IA, Vallejos C, Kalaw FGP, Soe P, Cai CX, Toy BC, Borkar D, Sun CQ, Shantha JG, Baxter SL. Variations in Electronic Health Record-Based Definitions of Diabetic Retinopathy Cohorts. Ophthalmology Science. 2024;4(4):100468.
- Guo Y, Copado IA, Yonamine S, Ma CJ, McLeod S, Arnold BF, McCulloch CE, Sun CQ. The Relationship Between Health Insurance Status and Diabetic Retinopathy Progression. Ophthalmology Science. 2024;4(3):100458.
2023
- Saroya J, Lu L, Ausayakhun S, Ausayakhun S, Khunsongkiet P, Apivatthakakul A, Sun CQ, Kim TN, Lee M, Tsui E, Sutra P, Keenan JD. Comparison of Three Handheld Fundus Cameras for Assessment of the Vertical Cup-To-Disk Ratio. Ophthalmic Epidemiology. 2023.
- Sun CQ, McSoley MJ, Lum F, Chang TC, Gedde SJ, Vanner EA. Tube Versus Trabeculectomy IRIS Registry Study: One-Year Secondary Treatment Outcomes. American Journal of Ophthalmology. 2023.
- Guo Y, Yonamine S, Ma CJ, Stewart JM, Acharya N, Arnold BF, McCulloch C, Sun CQ. Developing and Validating Models to Predict Progression to Proliferative Diabetic Retinopathy. Ophthalmology Science. 2023;3(2):100276.
- Mosenia A, Li P, Seefeldt R, Seitzman GD, Sun CQ, Kim TN. Longitudinal Use of Telehealth During the COVID-19 Pandemic and Utility of Asynchronous Testing for Subspecialty-Level Ophthalmic Care. JAMA Ophthalmology. 2023;141(1):56–61.
2022
- Qiu M, Shukla AG, Sun CQ. Improving Outcomes in Neovascular Glaucoma. Ophthalmology Glaucoma. 2022;5(2):125–127.
- Shan J, Ma C, Sun C. Neovascular Glaucoma in Proliferative Diabetic Retinopathy. In: Advancing Care in Neovascular Glaucoma. Springer; 2022:37–55.
2021
- Vanner EA, Sun CQ, McSoley MJ, et al. Tube Versus Trabeculectomy IRIS Registry 1-Year Composite Outcome Analysis. American Journal of Ophthalmology. 2021;227:87–99.
- Medert CM, Sun CQ, Vanner E, Parrish RK 2nd, Wellik SR. The Influence of Etiology on Surgical Outcomes in Neovascular Glaucoma. BMC Ophthalmology. 2021;21(1):440.
- Chen TA, Li J, Schallhorn JM, Sun CQ. Comparing a Home Vision Self-Assessment Test to Office-Based Snellen Visual Acuity. Clinical Ophthalmology. 2021;15:3205–3211.
- Vanner EA, Sun CQ, McSoley MJ, Persad PJ, Feuer WJ, Lum F, Kelly SP, Parrish RK, Chang TC, Gedde SJ. The Tube Versus Trabeculectomy IRIS Registry Study: Cohort Selection and Follow-up. American Journal of Ophthalmology. 2021;224:43–52.
- Sun CQ, Chen TA, Deiner MS, Ou Y. Clinical Outcomes of Micropulse Laser Trabeculoplasty Compared to Selective Laser Trabeculoplasty at One Year in Open-Angle Glaucoma. Clinical Ophthalmology. 2021;15:243–251.
2020
- Baxter SL, Gali HE, Mehta MC, Rudkin SE, Bartlett J, Brandt JD, Sun CQ, Millen M, Longhurst CA. Multicenter Analysis of Electronic Health Record Use among Ophthalmologists. Ophthalmology. 2021;128(1):165–166.