Children's Vision · Myopia Control · Vision Training
Crystal Wong 王水晶
Registered Optometrist in Hong Kong
Registered Optometrist (Part I), Hong Kong; BSc (Hons) in Optometry, The Hong Kong Polytechnic University; PhD candidate in Optometry. Seven years of clinical and research experience, focusing on childhood myopia control, binocular vision and vision training.
Book via WhatsApp Meet CrystalAreas of Specialist Care
Every child's visual development is different. A thorough assessment comes before any recommendation.
Children's Myopia Control
Orthokeratology (Ortho-K), defocus (DIMS) lenses, low-dose atropine as combined management, and specialist soft contact lens fitting—tailored to your child's age, rate of progression and daily habits.
Learn about myopia control →Strabismus, Amblyopia & Vision Training
Assessment of strabismus and amblyopia, binocular vision rehabilitation after strabismus surgery, and vision training follow-up for functional problems such as convergence insufficiency.
Learn about vision training →Children's Binocular Vision Assessment
A comprehensive check of eye alignment, accommodation, fusion and stereopsis—especially suited to children with double vision, a head turn, skipping or omitting words when reading, or affected learning performance.
Learn what the assessment involves →
An Optometrist Bridging Clinic and Research
Registered Optometrist (Part I), Hong Kong; BSc (Hons) in Optometry, The Hong Kong Polytechnic University; PhD candidate in Optometry. Seven years of clinical and research experience, focusing on childhood myopia control, binocular vision and vision training.
Full professional profile →Frequently Asked Questions
At what age should my child have their first comprehensive eye examination?
A first comprehensive eye examination is generally recommended at around three years of age. If there is a family history of high myopia, strabismus or amblyopia, or if you notice your child frequently squinting, tilting their head or rubbing their eyes, an earlier check is advisable. The preschool years are a critical window for visual development, and the earlier amblyopia and strabismus are detected, the better the outcome.
What is the difference between a routine eye test and a children's binocular vision assessment?
A routine eye test mainly measures vision and refractive error; a binocular vision assessment goes further to examine how the two eyes work together—including eye alignment, accommodation, fusion and stereopsis. Some children have normal vision but problems with binocular coordination, which can equally affect reading and learning. Learn more →
How do I choose between Ortho-K and defocus glasses?
Both are evidence-based methods of myopia control, and the choice depends on your child's age, prescription, corneal condition, hygiene habits and lifestyle. Only after a thorough assessment can we determine which option is better suited to your child. Learn more →
Is vision training still needed after strabismus surgery?
Strabismus surgery mainly adjusts eye alignment and the extraocular muscles, but eyes that look straight do not necessarily mean binocular coordination has been fully established. Whether vision training is needed should be decided by the ophthalmologist and optometrist based on an assessment of post-operative eye alignment, suppression, stereopsis and fusion. Learn more →