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About Dr Paul Sia
Dr Paul Sia is a highly skilled, fellowship-trained glaucoma and cataract surgeon with expertise across the full spectrum of glaucoma care, from early disease to advanced cases. He tailors treatment using a range of management approaches, including medication, laser therapy and surgery. Dr Sia offers an extensive suite of surgical options for glaucoma, including filtration procedures such as enhanced trabeculectomy and glaucoma drainage devices, minimally invasive bleb surgery with the Preserflo MicroShunt, and minimally invasive glaucoma surgery (MIGS) using iStent, Hydrus and Miniject. He is also highly experienced in cataract surgery and frequently combines cataract removal with angle-based MIGS for patients with co-existing glaucoma. In addition to his clinical practice, Dr Sia teaches and supervises cataract surgery at the Royal Victorian Eye and Ear Hospital. He is committed to understanding each patient’s individual needs and delivering care of the highest standard.
Additional languages spoken:
- Mandarin
- Malay
Operates at:
Career highlights
Teaching
- Dr Sia currently teaches within the acute ophthalmology and surgical services at the Royal Victorian Eye and Ear Hospital, where he also teaches and supervises trainee surgeons performing cataract surgery. He brings more than six years of experience in surgical supervision across New Zealand, Australia and the United Kingdom.
- During his time in New Zealand, Dr Sia served as a committee member of the Royal Australian and New Zealand College of Ophthalmologists as the Advanced Trainee Representative, contributing to the establishment of the College’s national teaching program for ophthalmology trainees.
- Academically, he has held Associate Clinical Lecturer (Ophthalmology) appointments at both the University of Otago and the University of Adelaide.
- In addition, Dr Sia has supervised multiple research students across both laboratory-based and clinical research settings, reflecting his ongoing commitment to education, mentorship and academic excellence.
Further information
Professional memberships
- Fellow of the Royal Australian and New Zealand College of Ophthalmologists (FRANZCO)
- Member of the Australian and New Zealand Glaucoma Society (ANZGS)
- Member of the United Kingdom and Eire Glaucoma Society (UKEGS)
Community involvement & charitable work
As part of a medical mission in China in 2025, Dr Sia ran an eye clinic and provided emergency ophthalmic care and glasses correction for the local community.
Education & training
- Bachelor of Medicine and Bachelor of Surgery, University of Otago, New Zealand
- Master of Philosophy, University of Adelaide, Australia
- Ophthalmology training, Royal Australian and New Zealand College of Ophthalmology, New Zealand
- Cataract and Medical Retina Fellowship, Monash Health, Australia
- Surgical Glaucoma Fellowship, Manchester Royal Eye Hospital, United Kingdom
Personal life
Outside of medicine, Dr Sia enjoys travelling, playing badminton, photography and serving in his local church community.
Research
Dr Sia has contributed to foundational retinal research, culminating in the award of a lab-based Master of Philosophy in Ophthalmology. His research focused on experimental models of glaucoma-related retinal damage and the investigation of potential neuroprotective agents in the setting of acute glaucoma. During his time in the United Kingdom, Dr Sia served as a co-investigator on several glaucoma research trials, including the NAMing, MAGIC and ELIOS studies. He has also published numerous clinical research papers across a broad range of ophthalmic subspecialties, including retinal disease, glaucoma, and lid and orbital conditions, reflecting the depth and breadth of his academic contribution to the field.
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Sia PI, Luiten AN, Stace TM, [...] et al.
Quantum biology of the retina.
Clinical & Experimental Ophthalmology. Aug 2014;42(6):582-9
DOI: 10.1111/ceo.12373 PMID: 24979043 -
Sia PI, Sia DI, Scroop R, [...] et al.
Orbital compartment syndrome following transvenous embolization of carotid-cavernous fistula.
Orbit. 2014 Feb;33(1):52-4.
DOI: 10.3109/01676830.2013.841717 PMID: 24144159 -
Sia PI, Sia DI, Crompton JL, [...] et al.
Nerve fiber layer infarcts in thiamine deficiency.
Journal of Neuro-Ophthalmology. Sep 2015;35(3):274-6.
DOI: 10.1097/WNO.0000000000000243 PMID: 25815858 -
Sia PI, Rajak S, Gilhotra J, [...] et al.
Elusive intraoptic nerve foreign body.
Clinical & Experimental Ophthalmology. Jan 2016;1(44):71-2.
doi.org/10.1111/ceo.12582 -
Sia PI, Wood JP, Chidlow G, [...] et al.
Role of the nucleolus in neurodegenerative diseases with particular reference to the retina: a review.
Clinical & experimental ophthalmology. Apr 2016;44(3):188-95.
DOI: 10.1111/ceo.12661 PMID: 26427048 -
Sia PI, Figueira E, Allende A, [...] et al.
Malignant hair follicle tumors of the periorbital region: A review of literature and suggestion of a management guideline.
Orbit. May 2016;35(3):144-56.
DOI: 10.1080/01676830.2016.1176048 PMID: 27171562 -
Sia PI, Figueira E, Kuss B, [...] et al.
T-cell large granular lymphocyte leukemia in the lower eyelid.
Ophthalmic Plastic & Reconstructive Surgery. Nov 2016;32(6):e126-8.
DOI: 10.1097/IOP.0000000000000297 PMID: 25198396 -
Sia PI, Rajak S, James C, [...] et al.
Sebaceous adenomas in the absence of Muir–Torre syndrome..
Canadian Journal of Ophthalmology. Oct 2016;51(5):e152-3.
DOI: 10.1016/j.jcjo.2016.05.006 PMID: 27769341 -
Chan WO, Shields MK, Ikgan Sia P, [...] et al.
Self-retaining weighted thermoplastic ampoule holder for aflibercept and ranibizumab vials..
Clinical & Experimental Ophthalmology. Apr 2017;45(8):837-9
DOI: 10.1111/ceo.12969 PMID: 28436565 -
Sia PI, Rajak S, Kokavec, [...] et al.
Chronic recurrent multifocal osteomyelitis: a case of orbital involvement..
Modern Rheumatology Case Reports. 3 Jul 2017;1(2):143-6.
doi.org/10.1080/24725625.2017.1320465 -
Sia PI, Rajak SN, Benger R, [...] et al.
Orbital cellulitis from facial tissue fillers.
Clinical & Experimental Ophthalmology. Aug 2017;45(6):648-51.
DOI: 10.1111/ceo.12930 PMID: 28186379 -
Sia PI, Aujla JS, Chan WO, [...] et al.
Fingolimod-associated retinal hemorrhages and roth spots. .
Retina. 2018 Oct 1;38(10):e80-1.
DOI: 10.1097/IAE.0000000000002334 PMID: 30234857 -
Halliday L, Sia PI, Durkin S, [...] et al.
Atypical case of hyaluronidase allergy with orbital compartment syndrome and visual loss..
Clinical & Experimental Ophthalmology. Jul 2018;46(5):563-4.
DOI: 10.1111/ceo.13128 PMID: 29219234 -
Chidlow G, Wood JP, Sia PI, [...] et al.
Distribution and activity of mitochondrial proteins in vascular and avascular retinas: Implications for retinal metabolism..
Investigative Ophthalmology & Visual Science. Jan 2019;60(1):331-44
DOI: 10.1167/iovs.18-25536 PMID: 30664793 -
Halliday L, Sia PI, Selva D, [...] et al.
Elusively reaching the apex..
Survey of Ophthalmology. Jul 2019;64(4):584-7
DOI: 10.1016/j.survophthal.2017.12.002 PMID: 29248532
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Dynamic MR dacryocystography: comparison with conventional dacryocystography and dacryoscintigraphy in the evaluation of nasolacrimal duct obstruction – a pilot study.
Oral presentation: Royal Australian and New Zealand College of Ophthalmologists (RANZCO) 49th Annual Scientific Congress
Perth, Australia, Nov 2017 -
A Case of Gyrate Atrophy with Bilateral CMO.
Oral presentation: South Australia Royal Australian and New Zealand College of Ophthalmologists (RANZCO) Biennial Scientific Conference
Adelaide, April 2017 -
Creatine and the Retina: Creatine protects cultured rat retinal neurons in a model of metabolic compromise.
Oral presentation: Royal Australian and New Zealand College of Ophthalmologists (RANZCO) 47th Annual Scientific Congress
Wellington, New Zealand, Nov 2015 -
Comparison of pressure and resistance in lacrimal syringing and dacryocystography.
Poster: Royal Australian and New Zealand College of Ophthalmologists (RANZCO) 49th Annual Scientific Congress
Perth, Australia, Nov 2017 -
Atypical case of hyaluronidase allergy with orbital compartment syndrome and visual loss.
Poster: Royal Australian and New Zealand College of Ophthalmologists (RANZCO) 49 th Annual Scientific Congress
Perth, Australia, Nov 2017 -
Creatine protects cultured rat retinal neurons in a model of metabolic compromise.
The Association for Research in Vision and Ophthalmology (ARVO) Annual Meeting
Seattle, United States, May 2016
