Dr Julian Theng Thiam Siew

Cornea & Refractive Surgery

Dr Julian Theng Thiam Siew

Group Chairman and Medical Director of Eagle Eye Centre

  • 30+ years, 10,000+ LASIK procedures
  • Named 'Best Eye Surgeon' by Singapore Health Awards

Clinical interests:

  • LASIK
  • EPI-LASIK
  • Trans PRK
  • Zeiss SMILE
  • ICL
  • Cataract
  • Eye Inflammation
  • Floaters
  • Age-Related Macular Degeneration
  • Cornea Transplant
  • General Eye Check
  • Dry Eyes
  • Presbyopia
30+
Years Experience
10,000+
Procedures Performed
99.2%
Surgery Success Rate
10,000+
Successful LASIK Procedures

LASIK & Cataract Specialist in Singapore - Founder, Group Chairman and Medical Director

Dr Theng is the founder, Group Chairman and Medical Director of Eagle Eye Centre. He graduated from the National University of Singapore (NUS) in 1992 with MBBS degree. Obtained post graduate qualifications, MMED (Ophth), FRCS (Edinburgh) and FRCOphth (London).

As a cornea specialist, Dr Theng has since developed his surgical skills leaning towards the areas of LASIK & Refractive Surgery, Cornea Transplants, as well as Cataract Surgery while maintaining his special interest in the field of Presbyopia management and treatment. Being a high-volume cataract surgeon, Dr Theng was selected to represent to conduct the Phase 4 Clinical FDA approval trial for the Restor +300ADD Multifocal Lens Implants. Dr Theng has since regularly performed multifocal lens implants in cataract surgery, and even wrote a book about Presbyopia. He also continues to bring in different cataract management techniques in Asia.

A sought-after speaker who has spoken at global conferences, such as the World Ophthalmology Congress and others, Dr Theng travelled the world to lecture and teach on LASIK, cataract and presbyopia treatments. He is also a member of Editorial Board for the Journal of Cataract & Refractive Surgery Today (CRST) Europe and represents Asia as an advisor in the field of Cataract and refractive surgery for Alcon, AMO and Ziemer.

More information

  • MBBS, M.Med (Ophth)
  • FRCS (Ed)
  • FRCOphth (London)
  • FAMS
  • MOH Specialist Registration
  • Singapore Ministry of Health (2011-Present)
  • Fellow, Royal College of Ophthalmologists
  • United Kingdom (2010)
  • American Academy of Ophthalmology
  • International Fellow (2012)
  • Singapore Medical Council
  • Full Registration (2002)
  • Author of “A Long Sighted Look at Presbyopia (Lau Hua Yan) Facts, Fiction and Hope”, a charity initiative to benefit Straits Times Pocket Money Fund
  • One of the only two surgeons in Singapore involved in the FIRST “tooth-in-eye” surgery and successfully restoring sight to a blind teenager
  • Surgeon for Singapore to to conduct Phase 4 Clinical Trials on the Designed Multifocal Lens Implant
  • Editorial Board: Singapore Medical Journal
  • Peer Reviewer: 8 international ophthalmology journals
  • Scientific Committee: Singapore Eye Research Institute
  • Teoh SCB, Thean LSY, Koay ESC. Cytomegalovirus in Aetiology of Posner-Schlossman Syndrome: Evidence from Quantitative Polymerase Chain Reaction. Eye 2005 Dec;19(12):1338-40.
  • Ng Aaron, Teoh SC. Dengue Eye Disease. Surv Ophthalmol. 2015 Mar-Apr, 60(2):106-14.
  • Iyer JV, Agrawal R, Yeo TK, DV Gunasekeran, Blakne PK, Lee B, AU VB, Connolly J, Teoh SC. Aqueous humor immune factors and cytomegalovirus (CMV) levels in CMV retinitis through treatment – The CRIGSS study. Cytokine. 2016 Aug;84:56-62
  • Agrawal R, Dinesh VG, Xu YP, Leo YS, Ng OT, Wong CS, Testi I, Ding JB, Banu I, Teoh SC. Clinical Features and CD4+ T Cells Count in AIDS Patients with CMV Retinitis: Correlation with Mortality. Ocul Immunol Inflamm. 2022 Jan 2;30(1):42-47. doi:10.1080/09273948.2020.1772312. Epub 2020 Jul 9.
  • Ng AWW, Mi HF, Ho SL, Teoh SC, Agrawal R. Ocular Autoimmune Systemic Inflammatory Infectious Study (OASIS) – Report 6: Dengue Uveitis at a Tertiary Eye Institution in Singapore. Ocul Immunol Inflamm. 2024 Feb;32(2):184-189. doi: 10.1080/09273948.2022.2159840. Epub 2023 Jan 6