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Sciences de la santé

Andrei-Alexandru Szigiato

Rétine médicale, études cliniques, chirurgie de la cataracte

Professeur adjoint de clinique

Faculté de médecine - Département d'ophtalmologie

Autre courriel : (Travail)



2022 – 2023                Clinical Fellowship - Medical Retina and Uveitis

                                    Cole Eye Center, Cleveland Clinic

                                    Supervisor - Dr. Sunil Srivastava

2017 – 2022                Residency – Ophthalmology

Université de Montréal, Department of Ophthalmology

                                    Chief Resident – 2020/2021

2016 – 2017                Research Fellowship – Glaucoma and Advanced Anterior Segment Surgery

University of Toronto, Department of Ophthalmology and Vision Sciences

                                    Supervisor – Dr. Ike Ahmed

2012 - 2016                 Doctor of Medicine

                                    University of Toronto

2008 - 2012                 Honours Bachelor of Science in Kinesiology and Health Sciences, Minor in Psychology York University. Summa Cum Laude (4.0 GPA)

Prix et distinctions

2023                            Retina Society Fellowship Research Award 

2021                            American Society of Cataract and Refractive Surgery Film Festival Award

2019, 2018                  Canadian Ophthalmology Society: Awards for Excellence in Ophthalmic Research (2)

2019                            Alain P. Rousseau Award: In recognition of excellence in ophthalmic research  

2015                            Dr. Louis Kagan Memorial Prize: In recognition of interest and achievement in the field of Ophthalmology

2015                            Golden Stethoscope Award: Awarded to the top 5 students in the Faculty of Medicine at the University of Toronto for passion, enthusiasm and                                                sustained excellence during clerkship

Affiliations et responsabilités

Enseignement et encadrement



Publications et communications


  1. Szigiato A, Mohan N, Talcott KE, Mammo DA, Babiuch AS, Kaiser PK, Ehlers JP, Rachitskaya A, Yuan A, Srivastava SK, Sharma S. Short Term Outcomes of Faricimab in Patients with Neovascular Age Related Macular Degeneration on Prior anti-VEGF Therapy. Ophthalmology Retina. 2023 Sep 4:S2468-6530(23)00437-2.
  2. Szigiato A, Rachitskaya A. OCT Angiography of a Prepapillary Vascular Loop. Ophthalmology Retina. 2023 Feb 25:S2468-6530(23)00053-2. 
  3. Szigiato A, Antaki F, Simon J, Samir T, Duval R, Cordahi G, Olivier S, Rezende F. Risk factors for Epiretinal Membrane Surgery following Pars Plana Vitrectomy for Primary Rhegmatogenous Retinal Detachment, an OCT Guided Analysis. Int J Retina Vitreous. 2022 Sep 30;8(1):70
  4. Seif R, El Jalbout, ND, Szigiato A, Harasymowycz P. Size Matters: Ab interno Suture Canaloplasty Revision with Suture Trabeculotomy. J Curr Glaucoma Pract. 2022 Sep-Dec;16(3):152-157
  5. Szigiato A, Touma S, Jabbour S, Lord F, Agoumi Y, Singh H. Efficacy of Ab-Interno Gelatin Microstent Implantation in Primary and Refractory Glaucoma. Can J Ophthalmol. 2022 Mar 23;S0008-4182(22)
  6. Liu J, Szigiato A, Takaishi RM, Harasymowycz P. Uveitis-glaucoma-hyphema syndrome secondary to an in-the-bag intraocular lens with capsular fibrosis: The perfect storm. Indian J Ophthalmol. 2022 2(3):670-672
  7. Palakkamanil M, Szigiato A, Ostroweka B, Ziai S, Kutzner M. Wellness Among Canadian Ophthalmology Resident Physicians: A National Survey. Can J Ophthalmol. 2021 Sep 22;S0008-4182(21)00321-5.
  8. Schlenker MB, Ong JA, Wu P, Jinapriya  D, Zack B, Dorey MW, Harasymowycz  PJ, Ahmed IIK, Canadian Ab Interno Microstent Study Group. Surgeon Experience as a Risk Factor for Short-Term Failure for Ab Interno Gelatin Microstent: A Canadian Multicenter Propensity-Matched Study. Ophthalmol Glaucoma. 2021 Jun 4;S2589-4196(21)00141-1.
  9. Nayman T, Bostan C, Szigiato A, Harissi-Dagher M. Long-Term Outcomes Following Primary Versus Secondary Boston Keratoprosthesis Type 1 Implantation. Br J Ophthalmol. 2021 Feb 23.
  10. Bostan C, Nayman T, Szigiato A, Morfeq H, Harissi-Dagher M. Endophthalmitis in Eyes With the Boston Type I Keratoprosthesis: Incidence, Recurrence, Risk Factors, and Outcomes. Cornea. 2020 Dec 31.
  11. Szigiato A, Palakkamanil M, Aubin MJ, Ziai S. The Canadian Ophthalmology Resident Experience during the COVID-19 Pandemic. Canadian Journal of Ophthalmology. 2020 Oct 26; S0008-4182(20)30785-7.
  12. Sayah DN, Szigiato A, Mazzaferri J, Duval R, Rezende F, Costantino S, Lesk MR. Correlation of ocular rigidity with intraocular pressure spike after intravitreal injection of bevacizumab in exudative retinal disease. Br J Ophthalmol. 2020 Apr 28; bjophthalmol-2019-315595.
  13. Szigiato A, Bostan C, Nayman T, Harissi-Dagher M. Long Term Visual Outcomes of the Boston Keratoprosthesis. Br J Ophthalmol. 2020 Feb 17. pii: bjophthalmol-2019-315345.
  14. Szigiato A, Anderson M, Mabon M, Germain M, Durr G, Labbé AC. Usefulness of Prestorage Corneal Swab Culture in the Prevention of Contaminated Corneal Tissue in Corneal Transplantation. Cornea. 2020 Jul;39(7):827-833.
  15. Szigiato A, Speckert M, Altomare F, Zielonka J, Hollamby K, Sgro M. The Effect of Eyemasks on Reducing Neonatal Stress Following Dilated Retinal Examination. JAMA Ophthalmology 2019 Sep 5;137(11):1265-72.
  16. Szigiato A, Choremis J, Talajic JC. Repair of Forceps-Induced Descemet’s Rupture with Descemet’s Membrane Endothelial Keratoplasty. Ophthalmology 2019 Apr;126(4):551.
  17. Szigiato A, Caldwell M, Buys YM, Kraft SP, Mireskandari K. Population Trends in Adult Strabismus Surgery. Canadian Journal of Ophthalmology. 2019 Aug;54(4):501-508.
  18. Szigiato A, Schlenker MB, Ahmed IIK. Hypotony secondary to perforation by scleral buckle. Canadian Journal of Ophthalmology. 2018 Aug;53(4):e156-e158.
  19. Szigiato A, Sandhu S, Ratnarajan G, Dorey MW, Ahmed IIK. Surgeon Perspectives on Learning Ab-Interno Gelatin Microstent Implantation. Canadian Journal of Ophthalmology. 2018 Jun;53(3):246-251.
  20. Szigiato A, Schlenker MB, Ahmed IIK. A Population Based Analysis of Intraocular Lens Exchange and Repositioning. Journal of Cataract and Refractive Surgery. 2017 Jun;43(6):754-760.
    1. Letter to the editor: Reply to Drs. Grzybowski and Kanclerz, Journal of Cataract and Refractive Surgery. 2017; 43:1484-1485.
  21. Szigiato A, Lee DH, Fraser JA. Selective Extraocular Muscle Atrophy Secondary to Chronic Oculomotor Denervation. JAMA Ophthalmology. 2017 Feb 9;135(2):e164664.
  22. Szigiato A, Caldwell M, Buys YM, Mireskandari K. Trends in Paediatric Strabismus Surgery in the new Millennium: Influence of funding and perceived benefits of surgery. Canadian Journal of Ophthalmology. 2017 Jun;52(3):243-249.
  23. Szigiato A, Podbielski D, Ahmed IIK. Sustained Drug Delivery for the Management of Glaucoma. Expert reviews in Ophthalmology. 2017, Jan:173-186. 
  24. Szigiato A, Schlenker MB, Ahmed IIK. Bleb Morphology After Needling with Viscoelastic of an Ab-Interno Microshunt Assessed by Optical Coherence Tomography. JAMA Ophthalmology. 2017 Jan 12;135(1):e164668.
  25. Szigiato A, Gilani F, Walsh MK, Mandelcorn EM, Muni RH. Induction of Macular Detachment for the Treatment of Persistent or Recurrent Idiopathic Macular Holes. Retina 2016 Sep;36(9):1694-8.
  26. Szigiato A, Trope GE, Buys YM. Same Day Bilateral Glaucoma Laser Treatments in Ontario: 2000- 2013. Journal of Glaucoma. 2016 Apr;25(4):339-42.
  27. Szigiato A, Trope GE, Buys YM. Wait Times and Volume of Cataract Surgery in Ontario, Canada: 2000-2012. Canadian Journal of Ophthalmology. 2016 Feb;51(1):7-13.
  28. Szigiato A, Bujak M. Focal cross-linking: description of a novel technique for localizing collagen cross-linking. Canadian Journal of Ophthalmology. 2016 Feb;51(1):e19-21
  29. Szigiato A, Trope GE, Jin Y, Buys YM. Trends in Glaucoma Surgical Procedures in Ontario: 1992- 2012. Canadian Journal of Ophthalmology 2015 Oct;50(5):338-44.
  30. Szigiato A, Hillier RJ, Muni RH. Bilateral Rhegmatogenous Retinal Detachment in Spondyloepimetaphyseal Dysplasia – Strudwick Type. Retinal Cases and Brief Reports. 2015 Winter;9(1):51-4.
  31. Shikatani E, Trifonova A, Krylova A, Szigiato A, Beaudry J, Riddell MC, Haas T. Inhibition of proliferation, migration and proteolysis contribute to corticosterone mediated inhibition of angiogenesis. PLoS One. 2012;7(10):e46625.
  32. D’Souza A, Beaudry JL, Szigiato A, Trumble SJ, Riddell MC. High Fat Feeding Rapidly Exacerbates the Development of NAFLD that Occurs with Chronically Elevated Glucocorticoids. American Journal of Physiology – Gastrointestinal and Liver Physiology. 2012 Apr 15;302(8):G850-63.
  33. Zisser H, Sueyoshi M, Krigstein K, Szigiato A, Riddell MC. Advances in exercise, physical activity and diabetes mellitus. Int J Clin Pract Suppl. 2012 Feb;(66, s175):62-71.
  34. Zisser H, Sueyoshi M, Krigstein K, Szigiato A, Riddell M. Advances in Exercise, Physical Activity and Diabetes Mellitus. Yearbook of Advanced Technology and Treatments in Diabetes. ATTD Yearbook, Editors: M. Phillip, T. Battalino. Wiley Press, Feb 2012.
  35. Serino AS, Adegoke OA, Zargar S, Gordon CS, Szigiato A, Hawke TJ, Riddell MC. Voluntary physical activity and leucine correct impairments in muscle protein synthesis in partially pancreatectomised rats. Diabetologia. 2011 Dec;54(12):3111-20. (Editor’s Pick January 2012)


  • Ophtalmologie
  • Épidémiologie et biostatistique
  • Endocrinologie

Champ d’expertise

  • Tumeurs rétiniennes et oculaires
  • Maladies de l'oeil et du système visuel
  • Système visuel
  • Vision

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