Dr Abdus Samad Ansari

Dr Samad Ansari is currently an Associate Consultant in the Department of Glaucoma at the Singapore National Eye Centre (SNEC). He graduated from the University of Leeds in 2013 and completed his ophthalmology residency in the United Kingdom on the South London rotation, with clinical training at Guy’s and St Thomas’ and King’s College Hospital NHS Foundation Trusts. He subsequently completed specialist fellowship training at Moorfields Eye Hospital, undertaking an adult glaucoma fellowship followed by a second dedicated paediatric glaucoma fellowship. 

Alongside his clinical practice, he is actively involved in research. He completed a three-year NIHR Academic Clinical Fellowship (ACF) at King’s College London (KCL) within the Department of Twin Research and Genetic Epidemiology, and an MSc at the Institute of Ophthalmology, UCL, London. His research interests include healthcare methodology, systematic reviews, clinical trials, and real-world data relating to glaucoma, ageing, and mitochondrial dysfunction. He has published extensively in these areas, including multiple book chapters, and has presented his work at local, national, and international meetings. His research has been recognised through numerous awards and competitive funding, including the inaugural Zakarian Award from the Royal College of Ophthalmologists (RCOphth) and Fight for Sight (UK). He is currently working with the Ocular Imaging Research Group at the Singapore Eye Research Institute (SERI).

• CCT (2024)
• PGCert (Applied Research Methods) (2023)
• FRCOphth (2022)
• PGCert (Medical Education) (2017)
• MSc (2016)
• MBChB (2013)

• Member, Glaucoma UK (2024 - present)
• Honorary Research Fellow, Kings College London (KCL) (2023 - present)
• Fellow,  Royal College of Ophthalmologists (RCOphth) (2022 - present)
• Journal Section Editor (Trainees), Eye News (UK) (2020 - present)

• The Théa TROPHY. Laboratoires Théa.  National Winner (1st United Kingdom), Top 3 International Winner (2026)
• Royal Society of Medicine (RSM): Ophthalmology Prize. Best Oral Presentation for Research (2023)
• Joanne G.Angle Memorial Travel Grant: ARVO (2023)
• International Society for Clinical Electrophysiology of Vision (ISCEV): Travel Grant Prize (2023)
• Fight for Sight & Royal College of Ophthalmologists: The Zakarian Award (2023)
• Trends in Ophthalmology: Kitty Heatley Memorial Research Prize and Medal (2021)
• Royal College of Ophthalmologists (RCOphth) & Bausch and Lomb: Sustainability Prevention Prize, 1^st Place (2021)
• ESCRS: Trainee Bursary Prize (2022)
• Joanne G.Angle Memorial Prize: ARVO (2021)
• Kestrel Ophthalmics: Kestrel Cup, Best Research Presentation (2020)
• Novartis Case Award: Winner, Medical Retina (2018)
• Betsi Cadwaladr University Health Board: Specialist Trainee Prize, 1^st place (2018)
• North of England Ophthalmology Society (NEOS): Video Competition, 1^st Place (2018)
• Royal Society of Medicine (RSM): Trainee update forum, Poster Prize (2016)

1. Risk Factors for Failure in Minimally Invasive Bleb Surgery: A Systematic Review. Jung M, Kong YZ, Ansari AS, Lawlor M, Tan JCK. American Journal of Ophthalmology. 2 Dec 2025. 283. 55–71.
2. Building consensus on MIGS: insights from a UKEGS survey. Ansari AS, Tatham AJ, Amerasinghe N, Gazzard G. Eye (London). Aug 2025. 39. 11. 2107–2109.
3. Trabeculectomy Augmented With Anti-VEGF Improves Surgical Outcomes in Glaucoma: A Systematic Review and Meta-Analysis. Ramji S, Tan JCK, Jarrar ZA, Hamid S, Gazzard G, Ansari AS. American Journal of Ophthalmology. Sep 2025. 277. (Issue N/A). 184–202.
4. Outcomes of aqueous shunt surgery in glaucoma secondary to congenital aniridia. Tan JCK, Ansari AS, Strouthidis NG, Brookes J, Khaw PT, Barton K, Puertas R. AJO International. 2025. 2. 2. 100114.
5. Discriminatory power of trabeculectomy bleb internal reflectivity and morphology in surgical success using anterior segment optical coherence tomography. Tan JCK, Roney M, Posarelli M, Ansari AS, Batterbury M, Vallabh NA. BMC Ophthalmology. 30 Jan 2025. 25. 1. 52.
6. Temporal-to-Nasal Macular Ganglion Cell and Inner Plexiform Layer Ratios in a Large Adult Twin Cohort: Correlations With Age and Heritability. Jarrar ZA, Al-Nosairy KO, Jiang X, Lamin A, Wong D, Ansari AS, Williams KM, Sivaprasad S, Hoffmann MB, Hysi PG, Hammond CJ, Mahroo OA. Investigative Ophthalmology & Visual Science. 1 Feb 2024. 65. 2. 26.
7. Glaucoma Patients Have a Lower Abundance of Butyrate-Producing Taxa in the Gut. Vergroesen JE, Jarrar ZA, Weiss S, Frost F, Ansari AS, Nguyen P, Kraaij R, Medina-Gomez C, Völzke H, Tost F, Amin N, van Duijn CM, Klaver CCW, Jürgens C, Hammond CJ, Ramdas WD. Investigative Ophthalmology & Visual Science. 1 Feb 2024. 65. 2. 7.
8. Is the Meibopatch Heated Pad Useful in Treating Patients with Meibomian Gland-Related Dry Eye Disease? - Assessing Tolerability, Acceptance, and Effectiveness. Bakhiet TE, Ansari AS, Williams GS, Awad MH, Thomas A. Clinical Ophthalmology. 30 May 2025. 19. 1743–1749.
9. Prevalence, Concordance, and Heritability of Vitreomacular Interface Abnormalities in a Twin Study. Jarrar ZA, Ansari AS, Williams KM, Wong DS, Hysi PG, Mahroo OA, Hammond CJ. Investigative Ophthalmology & Visual Science. 3 Jul 2023. 64. 10. 9.
10. The incidence and prevalence of recurrent corneal erosion syndrome in London, UK. Balal S, Ansari AS, Sim PY, Juwale H, Ismailjee MA, Hussain R, Ahmad S, Sharma A. Eye (London). Oct 2023. 37. 15. 3213–3216.
11. Stress and cataract surgery: A nationwide study evaluating surgeon burnout. Ansari AS, Tung ASW, Wright DM, Watts P, Williams GS. European Journal of Ophthalmology. Jul 2023. 33. 4. 1640–1649.
12. Sodium-glucose co-transporter-2 inhibitors in type 2 diabetes: Are clinical trial benefits for heart failure reflected in real-world clinical practice? A systematic review and meta-analysis of observational studies. Hinton W, Ansari AS, Whyte MB, McGovern AP, Feher MD, Munro N, de Lusignan S. Diabetes, Obesity and Metabolism. Feb 2023. 25. 2. 501–515.
13. A systematic review and meta-analysis of randomised controlled trials in the management of neovascular glaucoma: absence of consensus and variability in practice. Ramji S, Nagi G, Ansari AS, Kailani O. Graefe’s Archive for Clinical and Experimental Ophthalmology. Feb 2023. 261. 2. 477–501.
14. Case series of staged lamellar corneal grafting with thin manual Descemet's stripping endothelial keratoplasty, followed by manual deep anterior lamellar keratoplasty, as an alternative to penetrating keratoplasty. Tourkmani AK, McCance E, Ansari AS, Anderson DF. BMJ Case Reports. 19 Aug 2022. 15. 8. e246124.
15. Association between dietary niacin and retinal nerve fibre layer thickness in healthy eyes of different ages. Charng J, Ansari AS, Bondonno NP, Hunter ML, O'Sullivan TA, Louca P, Hammond CJ, Mackey DA. Clinical & Experimental Ophthalmology. Sep 2022. 50. 7. 736–744.
16. Evidence That Pupil Size and Reactivity Are Determined More by Your Parents Than by Your Environment. Ansari AS, Vehof J, Hammond CJ, Bremner FD, Williams KM. Frontiers in Neurology. 29 Apr 2021. 12. (Issue N/A). 651755.
17. Evaluating the long-term efficacy and effectiveness of Viscocanalostomy and combined phacoemulsification with Viscocanalostomy in the treatment of patients with uveitic glaucoma: 5-year follow up data. Salloukh AE, Ansari AS, Chiu A, Mathews D. BMC Surgery. 19 Apr 2021. 21. 1. 200.
18. Evaluation of the Northern Ireland National Artificial Eye Service: A Regional Audit of Patient and Prosthetic Characteristics. Duru I, Napier M, Ansari AS, Coyle S, Kamalarajah S, White S, Jackson AJ. Ophthalmic Epidemiology. Oct–Dec 2018. 25. 5-6. 338–344.
19. Glycemic control is an important modifiable risk factor for uveitis in patients with diabetes: A retrospective cohort study establishing clinical risk and ophthalmic disease burden. Ansari AS, de Lusignan S, Hinton W, Munro N, Taylor S, McGovern A. Journal of Diabetes and Its Complications. Jun 2018. 32. 6. 602–608.
20. Association Between Diabetes, Level of Glycemic Control, and Eye Infection: A Cohort Study. Ansari AS, de Lusignan S, Arrowsmith B, Hinton W, Munro N, McGovern A. Diabetes Care. Mar 2017. 40. 3. e30–e31.