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Research Subject Recruitment

Topic	Contact Details	Target	Recruitment Status
Short-term effect of Defocus Incorporated Multiple Segments (DIMS) lens on choroidal thickness of schoolchildren Principal Investigator: Dr. Ka-man Chun	Email: cht.dims@polyu.edu.hk Registration: https://bit.ly/3AUwbGs	Children aged between 6-13 years Myopia: at least -1.00D in both eyes Astigmatism: -4.00D or less Anisometropia: 1.50D or less No history on myopia control such as myopic control contact lenses and spectacle lenses, orthokeratology or atropine No squint (crossed eye), amblyopia (lazy eye) or colour vision deficiencies	Recruitment in progress. Spaces are limited and available on a first-come-first-served basis.
Effectiveness of bright light therapy, myopic defocus and the combinations for controlling myopic eye growth in schoolchildren: A randomized control trial Principal Investigator: Prof. Chi-ho To	Email: rif.adm@polyu.edu.hk Registration: https://bit.ly/3h8gLr1	Children aged between 7 -12 years Myopia between -0.75D to -5.00 D Astigmatism: less than ≤ -1.50 D No history on myopia control such as atropine, orthokeratology, or myopic control contact lenses and spectacle lenses No squint (crossed eye) or amblyopia (lazy eye)	Recruitment in progress. Spaces are limited and available on a first-come-first-served basis.
Anterior eye assessmentSubject recruitment Principal Investigator: Dr Thomas Lam	WhatsApp: 5725 7392 Email: cevr.dryeye@polyu.edu.hk Registration: https://bit.ly/3lYXpId	Age 13 years old or above (parental consent is required for participants aged under 18 years old) Lived in Hong Kong for at least 3 years	Recruitment in progress. Spaces are limited and available on a first-come-first-served basis
The process of adjusting intraocular pressure in people with non-high and high myopia Principal Investigator: Dr Andrew Lam	Ms Xu Tel.: 6314 3025 Email: fangyu.xu@connect.polyu.hk	Aged 20-30 Myopia ≥ -12.00D Good general health and no ocular diseases No history of ocular surgery	Spaces are limited and available on a first-come-first-served basis
Monthly disposable orthokeratology lenses (OK lenses) for new wearers Principal Investigator: Prof. Pauline Cho	Dr Peggy Cheung Tel.: 9250 7717 Email: peggy.cheung@polyu.edu.hk	Chinese children aged between 6 and 10 Both eyes with refractive sphere -0.75 to -4.00 DS; refractive cylinder ≤ -1.50 DC and anisometropia ≤ -1.00 D Normal vision, binocular function and accommodative status Normal health with no contra-indication for OK lens wear No prior experience in contact lens wear and myopia control treatment	Subject recruitment completed
Children Myopia Control Research Study Principal Investigator: Dr. Henry Chan	Ms. Wong Tel.: 5395 4702/ 6570 6030 Email: tkingwong@polyu.edu.hk	Aged 8-12 Myopia between -1.00 to -4.00 D Astigmatism: less than half of spherical error No systemic diseases or ocular abnormalities Suitable candidate for orthokeratology No history of ocular surgery No history on myopia control such as orthokeratology lenses, atropine treatment or any myopia control lenses	Spaces are limited and available on a first-come-first-served basis
Effect of Caffeine on Ocular Circulation in High Myopes Principal Investigator: Dr. Andrew Lam	Ms. Law Email: 14017822g@connect.polyu.hk	Aged 20-29 or 40-49 Myopia of at least -6D and astigmatism less than -2D Free of ocular and systemic diseases Non-smoker	Spaces are limited and available on a first-come-first-served basis
Ocular aberrations in emmetropic schoolchildren Principal Investigator: Dr. Rachel Chun and Dr. Jeffrey Leung	Ms. Yvonne Li Tel.: 2766 4148 Email:  yvonneyt.li@polyu.edu.hk	Aged 8-13 Hyperopia ≤ +1.50D or Myopia ≤ -0.50D Astigmatism ≤ -1.50D Good general health and no ocular diseases No strabismus and amblyopia	Spaces are limited and available on a first-come-first-served basis
Orthokeratology for High Myopia (OHM) Principal Investigator: Prof. Pauline Cho	Ms. Yang Tel.: 6486 2435 Email: grace.yj.yang@connect.polyu.hk	Aged 7-13 Good general health without any chronic diseases Myopia: at least -5.00D in both eyes Astigmatism: ≤ 1.50D Difference between eyes: ≤ 2.00D No strabismus, amblyopia or other ocular diseases No previous history of myopia control	Spaces are limited and available on a first-come-first-served basis
Oculomotor deficits in Parkinson’s Disease Principal Investigator: Dr. Allen Cheong	Ms. Tsang Tel.: 3400 2913/ 6103 5944 Email: lltsang@polyu.edu.hk	People with or without Parkinson’s disease are all welcome: Aged 40-70 Good vision Able to speak and comprehend Chinese (Cantonese) No squint or lazy eye No known eye diseases No medical problems, e.g. stoke, etc. No medical surgery: e.g. heart surgery, brain surgery, etc. No cognitive impairments, e.g. dementia, etc.	Spaces are limited and available on a first-come-first-served basis
Impact of excessively illuminated and glare environment on visual and balance performance during navigation of the visually impaired Principal Investigator: Dr. Allen Cheong	Ms. Suen WhatsApp/ Tel.: 9734 2120 Email:sovenus@polyu.edu.hk	Aged 50-65 Able to walk independently without aids No fall history in recent three months Good vision, no known eye disease or eye surgery history No hearing problem or significant medical history e.g. stoke, cancer, heart disease or cognitive impairment etc Able to speak Cantonese and read Traditional Chinese	Spaces are limited and available on a first-come-first-served basis
Myopia control using optimized optical defocus in schoolchildren – a 12 months randomized double masked control trial Principal Investigator: Prof. Carly Lam	Ms. Zhang Tel.: 3400 3389 Email:  myopia.control@polyu.edu.hk	Aged 8-13 Myopia between -1.00 to -5.00 D Astigmatism ≤ -1.00 D No ocular diseases No prior use of any drugs or optical devices of myopia control	Spaces are limited and available on a first-come-first-served basis

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