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

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