About Crystal

Crystal Wong (full English name Crystal Wong Suei Cheng; Chinese name 王水晶) is a Hong Kong registered optometrist (Part I) and a PhD researcher in vision neuroscience at The Hong Kong Polytechnic University, with seven years of combined clinical and research experience in children's vision.

Qualifications and registration

• Registered Optometrist (Part I), Optometrists Board, Hong Kong
• BSc (Hons) in Optometry, The Hong Kong Polytechnic University (2014–2019), with an international clinical internship at the University of Waterloo, Canada
• PhD candidate in Optometry (vision neuroscience), The Hong Kong Polytechnic University — full tuition scholarship, expected December 2026

Clinical expertise

• Myopia control: orthokeratology (Ortho-K), defocus lens assessment, low-dose atropine co-management, specialty soft lens fitting
• Binocular vision: paediatric binocular and accommodative assessment, strabismus and amblyopia assessment, vision training
• Specialty contact lenses: scleral lenses for irregular cornea, custom rigid gas-permeable fitting
• Co-management: over 200 refractive and cataract surgery cases co-managed with ophthalmologists

Clinical and research experience

• 2025 – PRESENT
  Optometrist
  EuroEyes International Eye Clinic — pre- and post-operative assessment for refractive and cataract surgery (LASIK, SMILE, ICL, phacoemulsification with IOL)
• 2022 – 2025
  Senior Research Optometrist
  The Hong Kong Polytechnic University — visual psychophysics and neuromodulation research; oral presentations at ARVO 2024 and CNS 2025
• 2022
  Research Assistant
  Centre for Eye and Vision Research (CEVR) — clinical validation of spectacle lens optical designs
• 2022
  Optometrist
  Hong Kong Ophthalmic Associates — specialist role in paediatric vision, binocular vision and myopia control within a multidisciplinary eye clinic
• 2019 – 2021
  Clinical Optometrist
  Optical 88 Professional Eye Care Centre — established orthokeratology and scleral lens fitting protocols

Research

Crystal's doctoral research investigates the neuromodulation of visual-cognitive function — combining transcranial magnetic stimulation (TMS), EEG and eye tracking to study visual-cognitive mechanisms in children with developmental dyslexia. She was invited for a three-month research visit to the University of Melbourne in 2026. Outside the lab, she built Orca, an online vision-training platform exploring home-based vision therapy.

Selected publications

• Wong, S.-C., Kee, C.-S., & Leung, T.-W. (2022). High Prevalence of Astigmatism in Children after School Suspension during the COVID-19 Pandemic Is Associated with Axial Elongation. Children, 9(6), 919.
• Wong, S.-C., Leung, T.-W., Thompson, B., & Cheong, A. M. Y. (2024). Continuous Theta Burst Stimulation on V5/MT+ Induces Hemifield-Specific Modulation of Motion Sensitivity. IOVS, 65(7), 2453 (ARVO 2024 oral presentation).