Variation of Orthokeratology Treatment Zone (VOTZ) Study
 
Principal Investigator:
Prof. Pauline Cho  

Ms. Guo
Tel.: 5425 2517
Email: 
ella.b.guo@polyu.edu.hk

• Aged 6-10

• Good general health without any chronic diseases

• Myopia: 1.0 - 4.0 D

• Astigmatism: ≤ 2.50 D

• Difference between eyes: ≤ 1.00 D

• No strabismus, amblyopia or other ocular diseases

• No prior history of myopia control

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

Does Blue-light Filering Spectacle Lens Promote Myopia Progression in Schoolchildren?

Principal Investigator:
Dr. Rachel Chun 

Ms. Li
Tel.: 2766 4148
Email: 
blue.myopia@polyu.edu.hk
 

• Aged 8-13

• Myopia between -1.00 to -5.00 D

• Astigmatism ≤ -1.50 D

• Good general health and no ocular diseases

• No strabismus or amblyopia

• No prior history of myopia control and specially designed spectacle wear

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