Adj A/Prof Ganga obtained his degrees from Madras Medical College, Chennai, India and completed his advanced subspecialty training at Henry Ford Hospital, Detroit, USA. He specialises in diseases and surgery of the eyelids, lacrimal system, orbit and oculofacial conditions. Committed to clinical and surgical excellence, he is a regional and international expert in disorders such as orbital trauma, ophthalmic oncology including retinoblastoma, vascular malformations, lacrimal system disorders, anophthalmic sockets, thyroid eye disease, facial palsy, etc. His special interests include minimally invasive surgery (such as endoluminal duct recanalisation (ELDR)), complex orbital trauma reconstructions (navigation surgery, bioresorbable implants and customised implants), medical and surgical rehabilitation of thyroid eye disease, and vascular lesions of the orbit.
As part of the core faculty in the Department of Ophthalmology at the National University Hospital (NUH), Adj A/Prof Ganga heads the Orbit & Oculofacial Surgery Service. He was instrumental in starting several multidisciplinary services, including the:
• NUH Retinoblastoma Service, working in collaboration with paediatric oncologists, neuro-interventional radiologists and pathologists.
• NUH Thyroid Eye Disease Service, working in collaboration with endocrinologists and immunologists.
• NUH Lacrimal Service, working in collaboration with rhinologists.
He has trained Fellows from numerous countries, including Singapore, Malaysia, Myanmar, the Philippines, India, Thailand, Iran, Syria, the United Kingdom, Nepal, Jordan, Palestine and Nigeria.
A former president of the Singapore Society of Ophthalmic Plastic & Reconstructive Surgery (SSOPRS), he currently serves as the Vice President of the International Society of Dacryology & Dry Eyes (ISD-DE) and as the President of the Asia Pacific Ophthalmic Trauma Society (APOTS).
Adj A/Prof Ganga has received numerous awards recognising his clinical, research, education and leadership including the NUHS Master Clinician Award, Global Ophthalmic Trauma Excellence Award (ASOT), American Academy of Ophthalmology Achievement Award, Asia Pacific Academy of Ophthalmology Distinguished Service Award for Ophthalmic Oncology and Senior Achievement Award, Ophthalmic Trauma Excellence Award (APOTS), Best Teacher Award as well as several International orations and named lectureships.
Adj A/Prof Ganga travels widely as a regional and international faculty at various orbital and craniomaxillofacial conferences, symposia and courses, advancing the level of care of orbital and orbitofacial disorders. He has contributed chapters to several textbooks in his field and serves in various leadership roles in national, regional and international professional societies. In addition to numerous scientific peer-reviewed publications, he has authored a book on 'Orbital Fractures – Principles, Concepts & Management' and co-authored a book on 'Ocular Adnexal Lesions – A Clinical, Pathological and Radiologic Correlation'.
Selected Publications:
1. Editor, Orbital Fractures: Principles, Concepts and Management. Imaging Science Today 2018. ISBN: 978-1-946915-09-2. Co-Editor, Ocular Adnexal Lesions: A clinical, radiological and pathological correlation. Springer, 2019. ISBN: 978-981-13-3798-7.1: Kansakar P, Sundar G. Vision loss associated with orbital surgery - a majorreview. Orbit. 2020 Jun;39(3):197-208. doi:10.1080/01676830.2019.1658790. Epub 2019 Oct 1. PMID: 31573370.
2. Co-Editor, Ocular Adnexal Lesions – A clinical, radiological and pathological correlation. Shantha Amrith, Gangadhara Sundar, Stephanie Young. Springer
3. YH Chin, CH Ng, MH Lee, JWH Koh, J Kiew, SP Yang, G Sundar, CM Khoo. Prevalence of thyroid eye disease in Graves' disease: A meta-analysis and systematic review. Clin Endocrinol (Oxf). 2020 Oct;93(4):363-374. doi: 10.1111/cen.14296. Epub 2020 Aug 10. PMID: 32691849.
4. Boniao EL, Gungab A, Lim BXH and Sundar G (2025). Pediatric orbital fractures in Singapore: demographics, etiology, and the role of bioresorbable implants. Front. Ophthalmol. 5:1506445. doi: 10.3389/fopht.2025.1506445.
5. Emmanuel Lee Boniao, Richard C. Allen & Gangadhara Sundar (2023) Targeted therapy and immunotherapy for orbital and periorbital tumors: a major review, Orbit, DOI: 10.1080/01676830.2023.2256848.
6. THB Lee, G Sundar. Quality of Life in Thyroid Eye Disease: A Systematic Review. Ophthalmic Plast Reconstr Surg. 2020 Mar/Apr;36(2):118-126. doi:10.1097/IOP.0000000000001446. PMID: 31567783.
7. W Wong, G Sundar, C Chee, PS Zhao, R Rajagopalan, L Gopal. Clinical spectrum, treatment and outcomes of uveal melanoma in a tertiary centre. Singapore Med J. 2019 Sep;60(9):474-478. doi: 10.11622/smedj.2019054. Epub 2019 Jun 14. PMID: 31197380; PMCID: PMC7911076.
8. MH Lee, YH Chin, CH Ng, KRY Nistala, ZGW Ow, G Sundar, SP Yang, CM Khoo. Risk Factors of Thyroid Eye Disease. Endocr Pract. 2021 Mar;27(3):245-253. doi:10.1016/j.eprac.2020.11.011. Epub 2020 Dec 14. PMID: 33655885.
9. S Seen, SM Young, SJ Teo, SS Lang, S Amrith, TC Lim, G Sundar. Permanent Versus Bioresorbable Implants in Orbital Floor Blowout Fractures. Ophthalmic Plast Reconstr Surg. 2018 Nov/Dec;34(6):536-543. doi:10.1097/IOP.0000000000001077. PMID: 29419638.
10. SM Young, AYN Lim, SS Lang, KO Lee, G Sundar. Efficacy and safety of pulsed intravenous methylprednisolone in early active thyroid eye disease. Orbit. 2019 Oct;38(5):362-369. doi: 10.1080/01676830.2018.1553189. Epub 2018 Dec 12. PMID:30540214.