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Our Doctors


Senior Staff Profiles  

A/Prof. Clement Tan

MBBS, MMed (Ophth),


A/Prof Clement Tan is the Head of Department and a Senior Consultant where he heads the Neuro-Ophthalmology Service at National University Hospital.


Apart from general clinical ophthalmology and general neuro-ophthalmology, he has special interests in eye movement and pupil disorders and receives referrals for neuro-ophthalmology from fellow ophthalmologists, neurologists and neurosurgeons.


After completing his basic and advanced Ophthalmology training in Singapore, A/Prof Tan completed a fellowship in Neuro-Ophthalmology at King's College Hospital and the National Hospital for Neurology and Neurosurgery in London, under the supervision of Drs Paul Riordan-Eva and Fion Bremner.


A/Prof Tan's research interests are in the field of neuro-ophthalmology.









A/Prof. Paul Chew
MBBS, FRCSEd, FRCOphth, MMed(Ophth)




A/Prof. Paul Chew is a senior consultant at the NUH Eye Surgery Centre. He is internationally known as a world-class glaucoma surgeon and has initiated many notable glaucoma studies. He is particularly well-known for his work on angle-closure glaucoma.


In addition, new laser therapies for glaucoma have been developed by him. He is the editor of the Asian Journal of Ophthalmology and is on the review boards of many other international journals. He has many years of experience as a high volume glaucoma surgeon. In addition, his performs complex cataract surgery and receives many referrals of difficult cataract operations.













Clin. A/Prof. Caroline Chee
MBBS, FRCSEd, FRCOphth, MMed(Ophth)


Clin. A/P Caroline Chee is a senior consultant ophthalmologist and is Head of the Vitreoretinal Service. She underwent general ophthalmic and retinal training in Singapore before proceeding to retinal fellowships in the United Kingdom (Addenbrooke’s Hospital, Cambridge and Moorfields Eye Hospital, London) in 1992-1993.


Her interests span both medical and surgical retinal diseases and she is experienced in the management of a wide variety of retinal problems, including complex diabetic eye disease and age-related macular diseases. She is also the Department Director for postgraduate education and plays an active role in examinations of the Royal College of Surgeons of Edinburgh, both locally and abroad








Dr. Gangadhara Sundar



Dr Ganga had obtained his residency training in Ophthalmology and a 2-year fellowship in Ophthalmic Plastic & Reconstructive Surgery from Henry Ford Hospital in Detroit. His areas of expertise include functional and reconstructive ophthalmic plastic surgery, esthetic oculo-facial surgery and ocular oncology and is certified by the American Board of Ophthalmology.


He is active in furthering the cause of the subspecialty in the South and East-Asian region and is actively involved in undergraduate and postgraduate education in Singapore. His special interests include esthetic and functional reconstructive surgery of the upper and midface, orbital reconstruction, anophthalmic sockets, pediatric oculoplastics and pediatric ophthalmology.








Dr. Loon Seng Chee

MBBS, FRCSEd, MMed (Ophth), MMed with Merit (Clinical Epidemiology)
Head & Senior Consultant for Glaucoma; Director Clinical Services

Dr Loon Seng Cheeis a senior consultant with sub-specialist training in glaucoma at theNationalUniversityHospital. He is also head of the glaucoma service and director of clinical services for the Eye Department.


Dr Loon specialises in performing laser and surgery for glaucoma, as well as complex cataract surgery. He has special interests in the epidemiology and development of glaucoma, imaging in glaucoma and in particular, the optic nerve. In addition, he specialises in the epidemiology of eye diseases, using the research of eye disease in applying the latest technologies in treatment whilst ensuring safety and efficacy in treatment.


Dr Loon received his basic training in Singapore, with specialist degrees conferred from the National University of Singapore and Edinburgh. He underwent further fellowship and training inSydney,Australia, where he did his advanced glaucoma and cataract training. During his fellowship, Dr Loon obtained a second Masters of Medicine (Merit) in Clinical Epidemiology fromSydneyUniversity. 


Dr Loon won a gold medal in Ophthalmology as a medical student and has received grants for his research. He has undertaken the Singapore Malay Eye Study and the Singapore Cohort Myopia Study, and was awarded travel grants for his research work inSydneywhen he was on a glaucoma fellowship.


Dr Loon has publications in major journals, with works in glaucoma, imaging, epidemiology and also the optic nerve head and is an appointed National Examiner in Ophthalmology.


Dr Loon is also keen in medical outreach, and has done medical mission work inBangladesh, China, Indonesia and Nepal. He does an average of two trips to such places a year with like-minded friends and colleagues. He has also been teaching glaucoma surgery to doctors in countries such asChina. In 2011, he was conferred the Humanity Award by President Nathan for his work in medical mission work.







Dr. Anna Tan 

MBBS(S'pore), MMed(Ophth), MRCSEd

Dr Anna Tan is a Consultant in Refractive Surgery, Corneal and External Eye Diseases, National University Hospital and an Instructor in Ophthalmology in the National University of Singapore.

Besides comprehensive Ophthalmology, Dr Tan is also experienced in treating cornea and external eye diseases. She is accredited to perform laser refractive surgery as well, including bladeless LASIK. Her other area of interest is in micropulse laser transscleral cyclophotocoagulation for the treatment of refractory glaucoma.

Dr Anna Tan graduated from National University of Singapore in 2002 and excelled academically. She was on the Dean's List for Outstanding Academic Performance in 1999 and 2002 and won the Eli Lilly Gold medal and Book prize in Psychological Medicine in 2001. She completed her Ophthalmology training in 2009 and clinched the Best Candidate award for the sections of Glaucoma, Cataract, Oculoplastics as well as Corneal and External Eye Diseases in the exit examination.





Dr. Ray Manotosh 

MBBS (India), MD (AIIMS), FRCS(Ed)

Dr Ray is a Consultant in Ophthalmology at National University Hospital. His field of specialization is Cornea and External Eye Diseases and General Ophthalmology. He is also an Instructor in Dept of Ophthalmology at Yong Loo Lin School of Medicine, National University of Singapore.


Dr Ray completed his undergraduate training at the University of Calcutta, India. He underwent basic surgical training in Ophthalmology at Prestigious All India Institute of Medical Sciences (AIIMS), New Delhi, the premier medical institute in India. He obtained his MD (Ophthalmology) in 1997. Subsequently he underwent advanced surgical training in the field of Cornea and external diseases at AIIMS. He also obtained Fellowship in Ophthalmology from Royal College of Surgeons of Edinburgh (UK) in 1998.


Dr Ray is practicing Ophthalmology since 1997. After completing the advanced surgical training in India he joined National University Hospital, Singapore in 2002. He received specialist accreditation in Ophthalmology in 2008. His area of interest is Cornea and external eye diseases including different forms of Corneal and Ophthalmic transplantations.


Dr Ray is an Instructor in Ophthalmology at National University of Singapore. He has contributed to clinical teaching in many ways. He is involved in regular undergraduate teaching program at NUS and also has been very active in basic and advanced surgical training. He has published 17 research articles in various international journals and also contributed at least 12 chapters in books of Ophthalmology.


In 2006, Dr Ray attained the NHG excellence Award for teaching. Research interests include the cornea, ocular surface and anterior segment.




Dr. Cheryl Ngo 

MBBS (Spore), MMed (Ophth), FRCSEd 



Dr Cheryl Ngo is a Canadafellowship-trained Ophthalmologist. She obtained her medical degree from The National University of Singapore and was awarded the Singapore Medical Association Medal for MBBS, the Yeoh Khuan Joo Gold Medal for surgery and was the reserve valedictorian for her graduating class in 2005. She completed her specialist ophthalmology training inSingapore, and is a fellow of the Royal College of Surgeons ofEdinburgh. She also holds a Master of Medicine (Ophthalmology),Singapore. Dr Ngo’s interests are in in general and paediatric ophthalmology, cataract, and strabismus in both children and adults. She also performs adult cataract surgery.


Dr Ngo was awarded the Academic Medicine Development Award (AMDA) FY 2013 for Paediatric Ophthalmology and Strabismus and completed a subspecialty fellowship training at the Department of Ophthalmology and Visual Sciences, Hospital for Sick Children,Toronto,Canada. She trained with world-renowned surgeons Dr Stephen Kraft, Dr Agnes Wong and Dr Brenda Gallie in complex strabismus cases, retinoblastoma, retinopathy of prematurity, paediatric cataract, glaucoma and neuro-ophthalmology cases.


Dr Ngo is active in medical education and is currently a tutor for the medical undergraduates at NUS as well as a clinical tutor for the ophthalmology residents. Apart from having published in notable peer-reviewed journals and books, she has presented at various international meetings in aspects of pediatric ophthalmology, cataract, glaucoma and general ophthalmology. She is also involved in various large multi center trials in pediatric ophthalmology. She received a NLAM Clinician Scientist Unit "Pitch for Funds" S$10,000 research grant in 2011 and National Medical Research Council NIG Award of S$125,000 for her research work in myopia in children. She also received the 3rd prize for Singapore Medical Journal best research paper award in 2013 for an article on glaucoma.


Dr Ngo is also actively involved in medical missions for NUHS and has been on medical and social relief missions to countries such as China, Cambodia and Indonesia.





Dr. Vivien Lim

MBBS, MMED, MRCSed (Ophth)

Dr Vivien Lim is an Associate Consultant with the Department of Ophthalmology, National UniversityHospital. Dr Vivien Lim completed her medical training with the Faculty of Medicine, National University of Singapore (NUS) in 2004.


During her residency years in Ophthalmology from 2006-2012, Dr Lim has held various administrative appointments, including Chief Registrar in the Division of Ophthalmology National University Hospital (NUH) from 2010-2011.


Dr Lim became a Member of the Royal College of Surgeons ofEdinburghand was awarded the Master of Medicine (Ophthalmology) by NUS in 2009. Upon completion of her residency in 2012, Dr Lim became a Fellow of theAcademyofMedicine, Singapore (FAMS). Her practice interests include general ophthalmology, adult cataract surgery and refractive (LASIK/ Implantable Contact Lens) surgery.


Dr Lim has published scientific papers in respected peer-reviewed medical journals, and presented at numerous international and local conferences. Her research interests are in cataract and refractive surgery. She is active in teaching medical students and ophthalmology residents, and is a faculty member at the Yong Loo Lin School of Medicine, NUS.




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