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Clinical Assistant Professor

BSc (Med), MBBS (Hons) (UNSW), FRCSEd (Ophthalmology), FCOphthHK, FHKAM (Ophthalmology)

Phone: 2518 1430 / 3962 1405
Email: jonochan@hku.hk

ORCID: 0000-0002-0177-8178

HKU Scholars Hub  My NCBI Bibliography

Dr. Chan studied medicine at the University of New South Wales, Australia. On returning to Hong Kong, he worked as a medical officer in ophthalmology at United Christian Hospital, where he completed his ophthalmology fellowship and training in glaucoma under Prof. Jimmy Lai (former Head of HKU Department of Ophthalmology). During his fellowship training, besides the United Christian Hospital, he has also worked at the Hong Kong Eye Hospital, Prince of Wales Hospital, and Alice Ho Miu Ling Nethersole Hospital. He was promoted to associate consultant in ophthalmology at Queen Mary Hospital, in 2008, before eventually taking up his current position at the University of Hong Kong in 2015. Since joining HKU, he has obtained more than HKD 2,000,000 in research grant and funding as principal investigator for conducting research and improving clinical services. He has authored over 60 publications in peer reviewed journals. He is also involved with the training and development of diabetic retinopathy screening in Hong Kong and is the current head of training for the diabetic retinopathy screening programme of the Hospital Authority.


Besides research, Dr. Chan is also dedicated to the teaching and welfare of medical students at HKU, where he has taught in the MBBS programme, as well as taken the role of MBBS Year 1 preceptor, clinical academic advisor, equal opportunity officer, and supervisor for research-based projects such as the Year 3 Health Research Project and the Enrichment Year programme. Dr. Chan is also involved in the training of future ophthalmologists in Hong Kong, being a member of both the Revision Course Organizing Committee and the Training Curriculum Review Committee of the College of Ophthalmologists of Hong Kong.


He has also regularly represented the university and his profession as a visiting consultant and invited speaker for various charity and professional organizations, such as the Asian Foundation for the Prevention of Blindness, Lifeline Express, College of Ophthalmologists of Hong Kong, and Hong Kong Ophthalmological Society. He was one of the first Hong Kong ophthalmologists to participate in the Asian Foundation for the Prevention of Blindness - Cataract Blindness Eradication Project in Kampong Cham (Cambodia) in 2018, and has also been an honorary clinical instructor for glaucoma procedures at the Liuzhou Red Cross Hospital (Guangxi, China) for 2020.


Key Offices

  • Director (2021) and executive committee member, Asian Foundation for the Prevention of Blindness

  • Member, Revision Course Organizing Committee, College of Ophthalmologists of Hong Kong

  • Member, Training Curriculum Review Committee, College of Ophthalmologists of Hong Kong

  • Head of training programme for diabetic retinopathy graders of the Hospital Authority, Hong Kong


Research Interests

  • Glaucoma, including: minimally invasive glaucoma surgeries (MIGS), enhancement of current standard glaucoma procedures, glaucoma of childhood, modulation of wound healing after glaucoma procedures, effect of long-term topical glaucoma treatment on ocular surface

  • Cataract surgery and its outcome

  • Diabetic retinopathy screening and treatment

  • Epidemiology of eye disorders


Publications (in chronological order; * as corresponding author)

  1. Chan JC, Lai JS, Lam DS. Nausea and vomiting after phacoemulsification using topical or retrobulbar anesthesia. J Cataract Refract Surg. 2002 Nov;28(11):1973-6. doi: 10.1016/s0886-3350(02)01428-1.

  2. Lai JS, Tham CC, Chan JC, Lam DS. Diode laser transscleral cyclophotocoagulation in the treatment of chronic angle-closure glaucoma: a preliminary study. J Glaucoma. 2003 Aug;12(4):360-4. doi: 10.1097/00061198-200308000-00011.

  3. Lai JS, Tham CC, Chan JC, Yip NK, Tang WW, Li PS, Yeung JC, Lam DS. Scanning laser polarimetry in patients with acute attack of primary angle closure. Jpn J Ophthalmol. 2003 Nov-Dec;47(6):543-7. doi: 10.1016/j.jjo.2003.08.006.

  4. Lai JS, Tham CC, Chan JC, Lam DS. Phacotrabeculectomy in treatment of primary angle-closure glaucoma and primary open-angle glaucoma. Jpn J Ophthalmol. 2004 Jul-Aug;48(4):408-11. doi: 10.1007/s10384-003-0075-2.

  5. Tham CC, Lai JS, Poon AS, Chan JC, Lam SW, Chua JK, Lam DS. Immediate argon laser peripheral iridoplasty (ALPI) as initial treatment for acute phacomorphic angle-closure (phacomorphic glaucoma) before cataract extraction: a preliminary study. Eye (Lond). 2005 Jul;19(7):778-83. doi: 10.1038/sj.eye.6701651.

  6. Lai JS, Tham CC, Chan JC, Lam DS. Diode laser transscleral cyclophotocoagulation as primary surgical treatment for medically uncontrolled chronic angle closure glaucoma: long-term clinical outcomes. J Glaucoma. 2005 Apr;14(2):114-9. doi: 10.1097/01.ijg.0000151890.41239.c5.

  7. Chan JC, Lai JS, Tham CC. Comparison of postoperative refractive outcome in phacotrabeculectomy and phacoemulsification with posterior chamber intraocular lens implantation. J Glaucoma. 2006 Feb;15(1):26-9. doi: 10.1097/01.ijg.0000196620.41991.b6.

  8. Lai JS, Tham CC, Chan JC. The clinical outcomes of cataract extraction by phacoemulsification in eyes with primary angle-closure glaucoma (PACG) and co-existing cataract: a prospective case series. J Glaucoma. 2006 Feb;15(1):47-52. doi: 10.1097/01.ijg.0000196619.34368.0a.

  9. Lai JS, Tham CC, Chua JK, Poon AS, Chan JC, Lam SW, Lam DS. To compare argon laser peripheral iridoplasty (ALPI) against systemic medications in treatment of acute primary angle-closure: mid-term results. Eye (Lond). 2006 Mar;20(3):309-14. doi: 10.1038/sj.eye.6701867.

  10. Tham CC, Lai JS, Kwong YY, Lam SW, Chan JC, Chiu TY, Lam DS. Correlation of previous acute angle-closure attack with extent of synechial angle closure in chronic primary angle-closure glaucoma patients. Eye (Lond). 2009 Apr;23(4):920-3. doi:10.1038/eye.2008.108.

  11. Tham CC, Kwong YY, Leung DY, Lam SW, Li FC, Chiu TY, Chan JC, Chan CH, Poon AS, Yick DW, Chi CC, Lam DS, Lai JS. Phacoemulsification versus combined phacotrabeculectomy in medically controlled chronic angle closure glaucoma with cataract. Ophthalmology. 2008 Dec;115(12):2167-2173. doi:10.1016/j.ophtha.2008.06.016.

  12. Tham CC, Kwong YY, Leung DY, Lam SW, Li FC, Chiu TY, Chan JC, Chan CH, Poon AS, Yick DW, Chi CC, Lam DS, Lai JS. Phacoemulsification versus combined phacotrabeculectomy in medically uncontrolled chronic angle closure glaucoma with cataracts. Ophthalmology. 2009 Apr;116(4):725-31. doi:10.1016/j.ophtha.2008.12.054.

  13. Tham CC, Kwong YY, Leung DY, Lam SW, Li FC, Chiu TY, Chan JC, Lam DS, Lai JS. Phacoemulsification vs phacotrabeculectomy in chronic angle-closure glaucoma with cataract: complications [corrected]. Arch Ophthalmol. 2010 Mar;128(3):303-11. doi:10.1001/archophthalmol.2010.12.

  14. Gangwani RA, Chan J, Lee J, Kwong A, Lai JS. Detection of glaucoma in a cohort of chinese subjects with systemic hypertension. J Ophthalmol. 2013;2013:463710. doi:10.1155/2013/463710.

  15. Lee JW, Chan JC, Chang RT, Singh K, Liu CC, Gangwani R, Wong MO, Lai JS. Corneal changes after a single session of selective laser trabeculoplasty for open-angle glaucoma. Eye (Lond). 2014 Jan;28(1):47-52. doi:10.1038/eye.2013.231.

  16. Lee JW, Liu CC, Chan JC, Lai JS. Predictors of success in selective laser trabeculoplasty for Chinese open-angle glaucoma. J Glaucoma. 2014 Jun-Jul;23(5):321-5. doi:10.1097/IJG.0000000000000049.

  17. Lee JW, Chan CW, Chan JC, Li Q, Lai JS. The association between clinical parameters and glaucoma-specific quality of life in Chinese primary open-angle glaucoma patients. Hong Kong Med J. 2014 Aug;20(4):274-8. doi:10.12809/hkmj134062.

  18. Lee JW, Liu CC2, Chan JCH, Wong RL, Wong IY, Lai JS. Predictors of success in selective laser trabeculoplasty for primary open angle glaucoma in Chinese. Clin Ophthalmol. 2014 Sep 9;8:1787-91. doi:10.2147/OPTH.S69166.

  19. Lee JW, Chan CW, Wong MO, Chan JCH, Li Q, Lai JS. A randomized control trial to evaluate the effect of adjuvant selective laser trabeculoplasty versus medication alone in primary open-angle glaucoma: preliminary results. Clin Ophthalmol. 2014 Sep 25;8:1987-92. doi:10.2147/OPTH.S70903.

  20. Lee JW, Wong RL, Chan JC, Wong IY, Lai JS. Differences in corneal parameters between normal tension glaucoma and primary open-angle glaucoma. Int Ophthalmol. 2015 Feb;35(1):67-72. doi:10.1007/s10792-014-0020-z.

  21. Lee JW, Liu CC, Chan JC, Lai JS. Predictors of success in selective laser trabeculoplasty for normal tension glaucoma. Medicine (Baltimore). 2014 Dec;93(28):e236. doi:10.1097/MD.0000000000000236.

  22. Lee JW, Fu L, Chan JC, Lai JS. Twenty-four-hour intraocular pressure related changes following adjuvant selective laser trabeculoplasty for normal tension glaucoma. Medicine (Baltimore). 2014 Dec;93(27):e238. doi:10.1097/MD.0000000000000238.

  23. Lee JW, Gangwani RA, Chan JC, Lai JS. Prospective study on the efficacy of treating normal tension glaucoma with a single session of selective laser trabeculoplasty. J Glaucoma. 2015 Jan;24(1):77-80. doi:10.1097/IJG.0000000000000089.

  24. Wong MO, Lee JW, Choy BN, Chan JC, Lai JS. Systematic review and meta-analysis on the efficacy of selective laser trabeculoplasty in open-angle glaucoma. Surv Ophthalmol. 2015 Jan-Feb;60(1):36-50. doi:10.1016/j.survophthal.2014.06.006.

  25. Lee JW, Fu L, Shum JW, Chan JCH, Lai JS. Continuous 24-hour ocular dimensional profile recording in medically treated normal-tension glaucoma. Clin Ophthalmol. 2015 Jan 29;9:197-202. doi:10.2147/OPTH.S75344.

  26. Lee JW, Ho WL, Chan JC, Lai JS. Efficacy of selective laser trabeculoplasty for normal tension glaucoma: 1 year results. BMC Ophthalmol. 2015 Jan 8;15(1):1. doi:10.1186/1471-2415-15-1.

  27. Gangwani RA, Lee JW, Mo HY, Sum R, Kwong AS, Wang JH, Tsui WW, Chan JC, Lai JS. The Correlation of Retinal Nerve Fiber Layer Thickness With Blood Pressure in a Chinese Hypertensive Population. Medicine (Baltimore). 2015 Jun;94(23):e947. doi:10.1097/MD.0000000000000947.

  28. Lee JW, Shum JJ, Chan JC, Lai JS. Two-Year Clinical Results After Selective Laser Trabeculoplasty for Normal Tension Glaucoma. Medicine (Baltimore). 2015 Jun;94(24):e984. doi:10.1097/MD.0000000000000984.

  29. Choy BN, Zhu MM, Shum JW, Ho WL, Chan JC, Ng AL, Lai JS. Collagen crosslinking in the management of leaking cystic blebs: a prospective study. Graefes Arch Clin Exp Ophthalmol. 2016 Mar;254(3):529-33. doi:10.1007/s00417-015-3245-2.

  30. Khor CC, Do T, Jia H, et al (including Chan JC). Genome-wide association study identifies five new susceptibility loci for primary angle closure glaucoma. Nat Genet. 2016 May;48(5):556-62. doi:10.1038/ng.3540.

  31. Choy BN, Chan JC, Chien CP, Lai JS. Recurrent acute angle-closure attack due to plateau iris syndrome after cataract extraction with or without argon laser peripheral iridoplasty: a case report. BMC Ophthalmol. 2016 May 26;16:64. doi:10.1186/s12886-016-0244-y.

  32. Shum JW, Choy BN, Ho WL, Chan JC, Lai JS. Consensual ophthalmotonic reaction in Chinese patients following augmented trabeculectomy or ExPRESS shunt implantation. Medicine (Baltimore). 2016 Jul;95(29):e4190. doi:10.1097/MD.0000000000004190.

  33. Azuara-Blanco A, Burr J, Ramsay C, Cooper D, Foster PJ, Friedman DS, Scotland G, Javanbakht M, Cochrane C, Norrie J; EAGLE study group (incl. JCH Chan). Effectiveness of early lens extraction for the treatment of primary angle-closure glaucoma (EAGLE): a randomised controlled trial. Lancet. 2016 Oct 1;388(10052):1389-1397. doi: 10.1016/S0140-6736(16)30956-4. PMID: 27707497.

  34. Choy BN, Wong MO, Chan JC, Lai CH, Lai JS. ExPRESS Mini-Shunt as a Treatment Alternative for Medically Uncontrolled Steroid-Induced Glaucoma in a Pediatric Patient. Case Rep Ophthalmol. 2016 Dec 1;7(3):270-276. doi:10.1159/000453393.

  35. Shum JWH, Choy BNK, Chan JCH, Ho WL, Jiang BY, Choi WK, Cheung VYT, Lai JSM. Visual Field Compromised In Patients Suffering From Severe Menorrhagia. J Ophthalmol Open Access. 2017 May 27;1:1-7.

  36. Shum JWH, Lam WWT, Choy BNK, Chan JCH, Ho WL, Lai JSM. Development and pilot-testing of patient decision aid for use among Chinese patients with primary open-angle glaucoma. BMJ Open Ophthalmol. 2017 Dec 14;2(1):e000100. doi:10.1136/bmjophth-2017-000100.

  37. Zhu MM, Lai JSM, Choy BNK, Shum JWH, Lo ACY, Ng ALK, Chan JCH, So KF. Physical exercise and glaucoma: a review on the roles of physical exercise on intraocular pressure control, ocular blood flow regulation, neuroprotection and glaucoma-related mental health. Acta Ophthalmol. 2018 Sep;96(6):e676-e691. doi:10.1111/aos.13661.

  38. Choy BNK, Lai JSM, Yeung JCC, Chan JCH*. Randomized comparative trial of diode laser transscleral cyclophotocoagulation versus Ahmed glaucoma valve for neovascular glaucoma in Chinese - a pilot study. Clin Ophthalmol. 2018 Dec 7;12:2545-2552. doi:10.2147/OPTH.S188999.

  39. Choy BNK, Zhu MM, Pang JCS, Chan JCH, Ng ALK, Fan MCY, Iu LPL, Kwan JSK, Lai JSM, Chiu PKC. Factors Associated with Poor Eye Drop Administration Technique and the Role of Patient Education among Hong Kong Elderly Population. J Ophthalmol. 2019 Mar 26;2019:5962065. doi:10.1155/2019/5962065.

  40. Cai Y, Choy BNK, Zhu MM, Li BB, Chan JCH, Ho WL, Lai JSM. Prospective study on a novel treatment for leaking cystic bleb: Efficacy and safety of collagen crosslinking. Clin Exp Ophthalmol. 2019 Aug;47(6):749-756. doi:10.1111/ceo.13520.

  41. Choy BNK, Zhu MM, Chan JCH*. Bilateral segmental accessory iris membrane with narrow anterior chamber angle. Indian J Ophthalmol. 2019 Oct;67(10):1727. doi:10.4103/ijo.IJO_68_19.

  42. You QS, Chan JCH, Ng ALK, Choy BKN, Shih KC, Cheung JJC, Wong JKW, Shum JWH, Ni MY, Lai JSM, Leung GM, Cheung CMG, Wong TY, Wong IYH. Macular Vessel Density Measured With Optical Coherence Tomography Angiography and Its Associations in a Large Population-Based Study. Invest Ophthalmol Vis Sci. 2019 Nov 1;60(14):4830-4837. doi:10.1167/iovs.19-28137.

  43. Cheung JJC, Chang DL, Chan JC, Choy BNK, Shih KC, Wong JKW, Ng ALK, Shum JWH, Ni MY, Lai JSM, Leung GM, Wong IYH. Exophthalmometry values in the Hong Kong Chinese adult population from a population-based study. Medicine (Baltimore). 2019 Nov;98(47):e17993. doi:10.1097/MD.0000000000017993.

  44. Tham YC, Tao Y, Zhang L, Rim THT, Thakur S, Lim ZW, Chee ML, Bikbov MM, Kazakbaeva GM, Wang N, Cao K, Hao J, Nangia V, Panda-Jonas S, Wang YX, Wong IY, Chan JCH, Meng Q, Sabanayagam C, Wong TY, Jonas JB, Zhong H, Cheng CY; Asian Eye Epidemiology Consortium (AEEC). Is kidney function associated with primary open-angle glaucoma? Findings from the Asian Eye Epidemiology Consortium. Br J Ophthalmol. 2020 Jan 20:bjophthalmol-2019-314890. doi:10.1136/bjophthalmol-2019-314890.

  45. Chan JC*, Chow SC, Lai JS. Effectiveness and Safety of Long Duration versus Short Duration Diode Laser Transscleral Cyclophotocoagulation. Clin Ophthalmol. 2020 Jan 22;14:197-204. doi:10.2147/OPTH.S228910.

  46. Wong PWF, Lai JSM, Chan JCH*. A Serial Cross-Sectional Analysis of the Prevalence, Risk Factors and Geographic Variations of Reduced Visual Acuity in Primary and Secondary Students from 2000 to 2017 in Hong Kong. Int J Environ Res Public Health. 2020 Feb 6;17(3):1023. doi:10.3390/ijerph17031023.

  47. You QS, Choy BKN, Chan JCH, Ng ALK, Shih KC, Cheung JJC, Wong JKW, Shum JWH, Ni MY, Lai JS, Leung GM, Wong TY, Wong IYH. Prevalence and Causes of Visual Impairment and Blindness among Adult Chinese in Hong Kong - The Hong Kong Eye Study. Ophthalmic Epidemiol. 2020 Apr 20:1-10. doi:10.1080/09286586.2020.1755444.

  48. Shih CK, Chan JCH, Lai JSM. Maintenance of ophthalmic specialist out-patient service during the COVID-19 outbreak: The University of Hong Kong experience. Eye (Lond). 2020 Apr 21:1–2. doi:10.1038/s41433-020-0887-z.

  49. Shih KC, Chan JC, Chen JY, Lai JS. Ophthalmic clinical skills teaching in the time of COVID-19: A crisis and opportunity. Med Educ. 2020 Apr 23. doi:10.1111/medu.14189.

  50. Rim TH, Kawasaki R, Tham YC, Kang SW, Ruamviboonsuk P, Bikbov MM, Miyake M, Hao J, Fletcher A, Sasaki M, Nangia V, Sabanayagam C, Yu M, Fujiwara K, Thapa R, Wong IY, Kayama T, Chen SJ, Kuang TM, Yamashita H, Sundaresan P, Chan JC, van Rens GHMB, Sonoda KH, Wang YX, Panda-Jonas S, Harada S, Kim R, Ganesan S, Raman R, Yamashiro K, Gilmanshin TR, Jenchitr W, Park KH, Gemmy Cheung CM, Wong TY, Wang N, Jonas JB, Chakravarthy U, Cheng CY, Yanagi Y; Asian Eye Epidemiology Consortium. Prevalence and Pattern of Geographic Atrophy in Asia: The Asian Eye Epidemiology Consortium. Ophthalmology. 2020 Apr 25:S0161-6420(20)30395-X. doi: 10.1016/j.ophtha.2020.04.019. Epub ahead of print.

  51. Shih KC, Kwong ASK, Wang JHL, Wong JKW, Ko WWK, Lai JSM, Chan JCH*. Diabetic retinopathy screening during the coronavirus disease 2019 pandemic. Eye (Lond). 2020 Jul;34(7):1246-1247. doi: 10.1038/s41433-020-0928-7. Epub 2020 May 4.

  52. Wong JKW, Shih KC, Chan JCH, Lai JSM. Tele-ophthalmology amid COVID-19 pandemic-Hong Kong experience. Graefes Arch Clin Exp Ophthalmol. 2020 May 29:1. doi: 10.1007/s00417-020-04753-1. Epub ahead of print.

  53. Shih KC, Wong JKW, Lai JSM, Chan JCH*. The case for continuing elective cataract surgery during the COVID-19 pandemic. J Cataract Refract Surg. 2020 Jun;46(6):921. doi: 10.1097/j.jcrs.0000000000000225.

  54. Wong PW, Lau JK, Choy BN, Shih KC, Ng AL, Chan JC*, Wong IY. Epidemiological factors associated with health knowledge of three common eye diseases: A community-based pilot survey in Hong Kong. SAGE Open Med. 2020 Jul 20;8:2050312120943044. doi: 10.1177/2050312120943044.

  55. Chan JC*, Chan LP, Yeung CP, Tang TW, O YM, Lam WC. Effect of Music on Patient Experience during Intravitreal Injection. J Ophthalmol. 2020 Jul 30;2020:9120235. doi: 10.1155/2020/9120235.

  56. Shih KC, Chau CYC, Chan JCH, Wong JKW, Lai JSM. Does the COVID-19 Pandemic Spell the End for the Direct Ophthalmoscope? Ophthalmol Ther. 2020 Dec;9(4):689-692. doi: 10.1007/s40123-020-00295-1. Epub 2020 Aug 29. PMID: 32860621; PMCID: PMC7456205.

  57. Wong PW, Lau JK, Choy BN, Shih KC, Ng AL, Wong IY, Chan JC*. Sociodemographic, behavioral, and medical risk factors associated with visual impairment among older adults: a community-based pilot survey in Southern District of Hong Kong. BMC Ophthalmol. 2020 Sep 18;20(1):372. doi: 10.1186/s12886-020-01644-1. PMID: 32948134.

  58. Ian Y.H. Wong, Raymond L.M. Wong, Jonathan C.H. Chan, Ryo Kawasaki, Victor Chong. Incorporating Optical Coherence Tomography Macula Scans Enhances Cost-effectiveness of Fundus Photography-Based Screening for Diabetic Macula Edema. Diabetes Care. Oct 2020, dc172612; doi: 10.2337/dc17-2612.

  59. Chan JC*, Chow SC, Lai JS. Retrospective analysis of paediatric glaucoma at a tertiary referral centre in Hong Kong. Jpn J Ophthalmol. 2020 Oct 26. doi: 10.1007/s10384-020-00779-4. PMID: 33104957.

  60. Kwok JJSW, Chan JCH, Wong JKW, Lai JSM. Videographic evaluation of aerosol generation during cataract surgery. J Cataract Refract Surg. 2020 Dec;46(12):1683-1684. doi: 10.1097/j.jcrs.0000000000000312. PMID: 32833875

  61. Wong JKW, Kwok JSWJ, Chan JCH, Shih KC, Qin, Lau D, Lai JSM. Aerosolization and Fluid Spillage During Phacoemulsification in Human Subjects. Clin Ophthalmol. 2021;15:307-313. doi: 10.2147/OPTH.S294778.

  62. Chow SC, Chan JC*. Review on the Use of Topical Ocular Hypertonic Saline in Corneal Edema. Cornea. 2021 Jan 18. doi: 10.1097/ICO.0000000000002652. PMID: 33470681.

  63. Lian JX, McGhee SM, So C, Kwong ASK, Sum R, Tsui WWS, Chao DVK, Chan JCH*. Screening for diabetic retinopathy with different levels of financial incentive in a randomized controlled trial. J Diabetes Investig. 2021 Jan 23. doi: 10.1111/jdi.13512. PMID: 33484625.

  64. Choy BNK, Pang JCS, Zhu MM, Ng ALK, Chan JCH, Fan MCY, Iu LPL, Chiu PKC, Kwan JSK, Lai JSM. Association between functional status and ocular surface disease among local elderly population in Hong Kong. Semin Ophthalmol. 2021 Feb 19:1-4. doi: 10.1080/08820538.2021.1890149. PMID: 33602022.


Grant-supported research projects (chronological order)
Completed:

  1. Site principal investigator, Queen Mary Hospital for: The effectiveness of early lens extraction with intraocular lens implantation for the treatment of primary angle-closure glaucoma. In collaboration with the Centre for Healthcare Randomised Trials (CHaRT) of the University of Aberdeen, UK

  2. Site co-investigator, Grantham Hospital for:
    A randomized clinical trial comparing Phacoemulsification and Goniosynechialysis with Phacoemulsification alone in the management of Primary Angle Closure.
    In collaboration with the Singapore National Eye Centre, Singapore

  3. Principal investigator for:
    The feasibility of screening for diabetic retinopathy in private practice Hong Kong.
    Supported by a Health and Medical Research Fund (HMRF) grant from the Food and Health Bureau (FHB) of Hong Kong


In progress:

  1. Principal investigator for:
    Trabeculectomy with EX-PRESS and ologen implants and mitomycin-C (EPom) in primary open angle glaucoma and ocular hypertension – a pilot study.
    Supported by an internal grant (seed fund) from the University of Hong Kong

  2. Principal investigator for:
    Micropulse versus continuous wave transscleral diode laser cyclophotocoagulation – a randomized controlled trial.
    Supported by a grant from the S.K. Yee Medical Foundation, Hong Kong

  3. Co-investigator for:
    How can we allocate the screening interval for diabetic retinopathy in Hong Kong: towards a personalized approach.
    Supported by a Health and Medical Research Fund (HMRF) grant from the Food and Health Bureau (FHB) of Hong Kong

  4. Co-investigator for:
    Evaluate the effectiveness of the combination of anodal transcranial direct current stimulation (a-tDCS) and perceptual learning on visual function in patients with macular degeneration.
    Supported by an overseas research grant from Velux Stiftung Foundation (Zurich, Switzerland)

  5. Co-Principal investigator for:
    Improving vision and quality of life in patients with glaucoma using non-invasive brain stimulation and perceptual learning. A randomized clinical Trial.
    Supported by a Research Impact Fund (RIF) from the Research Grants Council of Hong Kong