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Clin Assoc Prof Quah Boon Long

Clin Assoc Prof Quah Boon Long

​MBBS, M Med(Ophth), FRCS(Ed), FAMS

Senior Consultant

Singapore National Eye Centre

Specialty: Paediatric Ophthalmology & Adult Strabismus, Cataract & Comprehensive Ophthalmology

Sub-specialties: Paediatric Ophthalmology & Adult Strabismus, Cataract & Comprehensive Ophthalmology

Clinical Appointments

  • Senior Consultant Paediatric Ophthalmology & Adult Strabismus Department Singapore National Eye CentreSingapore National Eye Centre
  • Senior Consultant Cataract & Comprehensive Ophthalmology Department Singapore National Eye CentreSingapore National Eye Centre
  • Senior Consultant Eye Centre KK Women's and Children's HospitalKK Women's and Children's Hospital

Academic Appointments

  • Clinical Associate Professor SingHealth Duke-NUS Ophthalmology & Visual Sciences Academic Clinical Programme


Clinical Associate Professor Quah graduated from the National University of Singapore in 1987 and was trained in Ophthalmology at the Singapore General Hospital, Tan Tock Seng Hospital and Singapore National Eye Centre (SNEC). From 1998 – 1999 he was an International Fellow at The Hospital For Sick Children in Toronto, where he underwent training in Paediatric Ophthalmology and Adult Strabismus. He has won the prestigious John Gaby Best Fellow Research Prize at University of Toronto for producing the best research work amongst Ophthalmology Fellows at the University in 1999. In his formative years, Clinical Associate Professor had also won various awards for his research writings including the 1st prize in Institute of Biology national essay writing competition on "Ethics of Bioengineering" (1981) and SNEC Merit Award for Research (1996).

Clinical Associate Professor Quah is a Fellow of the Academy of Medicine (Singapore), Fellow of Royal College of Surgeons of Edinburgh, and a Council Member of Asia-Pacific Strabismus and Paediatric Ophthalmology Society. His clinical areas of interest include Paediatric Ophthalmology, Squints (Strabismus), Cataracts in adults and children, and General Ophthalmology. He is actively involved in training of doctors at all levels from medical students, medical officers to ophthalmology trainees and fellows.

Clinical Associate Professor Quah has participated as invited speaker at many local and international meetings. He has published book chapters and numerous research papers. His research interests include strabismus, retinoblastoma and paediatric eye disorders. He derives energy from an active and sporting lifestyle and still indulges in the occasional competitive swimming and running.


  • FAMS (1997)
  • FRCS(Ed) (1993) 
  • M Med(Ophth) (1993)
  • MBBS (1987)

Professional Appointments and Committee Memberships

  • Council Member, Institute for Patient Safety and Quality Council (2017 - present)
  • Member, Quality Assurance Committee, Singapore National Eye Centre (2017 - present)
  • Member, Exam Working Committee for Ophthalmology (2017 – present)
  • Council Member, Global Advisory Council of World Society of Paediatric Ophthalmology and Strabismus (2013 - present)
  • Council Member, Asia-Pacific Strabismus and Paediatric Ophthalmology Society (2013 - present)
  • Member, Resident Advisory Committee (2013 - present)
  • National Examiner for Ophthalmology, Ministry of Health


  • SingHealth Quality Service Award (2014, 2015, 2016)
  • Service from the Heart Award, KK Women’s & Children’s Hospital (2008, 2014)
  • People Developer Outstanding Clinical Teacher Award, KK Women’s & Children’s Hospital (2011) 
  • Star Award for Excellent Service, Service Quality Centre (2006) 
  • John Gaby Best Fellow Research Prize, University of Toronto (1999) 
  • Merit Award for Research, Singapore National Eye Centre (1996) 
  • Public Service Commission Local Merit Scholarship (1982) 
  • 1st Prize Institute of Biology National Essay Writing competition on “Ethics of Bioengineering” (1981)

Research Interests


  1. Mutation spectrum of RB1 mutations in retinoblastoma cases from Singapore with implications for genetic management and counselling. PLOSone 2017 Jun 2;12(6)
  2. Anisometropia as a sign of unilateral glaucoma in the paediatric population. Int Med Case Reports Journal. 2017:10,203-207
  3. Clinical profile, management and outcome of retinoblastoma in Singapore. J Pediatr Ophthalmol Strabismus 2013. Vol 50, no.2, pg 106-112
  4. Risk factors for strabismus and amblyopia in young Singapore Chinese children. Ophthalmic Epidemiol 2013 Jun; 20(3):138-47
  5. Post-operative strabismus control and motor alignment for basic intermittent exotropia. Int J Ophthalmol 2016, Vol 9, no 7, Jul 18
  6. Novel technique of dog tick removal from eyelid. Acta Ophthalmologica e819-e820.2016doi:10.1111/aos.13165
  7. Current management of retinoblastoma. JPOG Sep/Oct 2011 pg 213-220
  8. A retrospective review of 287 consecutive children presenting with intermittent exotropia in Singapore. JAAPOS 2005 Vol 9(3):257-263
  9. Atropine for the treatment of childhood myopia. Ophthalmology 2006 Dec,113(12);2285-2291
  10. Surgical experiences with two-muscle surgery for the treatment of intermittent exotropia. JAAPOS 2006 June;10(3):206-11
  11. An unusual case of acute, bilateral optic disc swelling with macular star in a 9 year-old girl. JPOS 2007, Vol 44(4):245-47
  12. Orbital cellulitis in children –medical treatment versus surgical management. Orbit 28, 124-136, 2009
  13. High incidence of allelic lossat 16q12.2 region spanning RB22/p130 geen in retinoblastoma. Cancer biology and therapy.2009 april;8(8):714-7
  14. Contact lenses in paediatrics study in Singapore. Eye and Contact Lens. Vol 35, no.4:188-195, July 2009
  15. Prevalence of amblyopia and strabismus in young Singaporean children. Invest Ophthalmol Vis sci.2010 Jul;51(&):3411-7
  16. Unilateral retinoblastoma in an eye with peters anomaly. JAAPOS 2010 Apr; 14(2):184-6
  17. Characteristics of divergence excess type intermittent exotropia in Asian children. JAAPOS 2011, Vol 15(5);pg468-472
  18. Periocular capillary hemangioma; management practices in recent years. Clin Ophth 2013;7,1227-1232      
  19. Dissociated hypotropia: clinical features and surgical management of 2 cases. Journal of AAPOS 2006 Oct; 10(5):389-393
  20. Report of National Myopia Prevention and Control Workgroup 2006: A summary. Annals Academy of Medicine. Oct 2007, Vol.36(Suppl)No.10:S65-S71

Research Trials