School of Optometry 眼科視光學院
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About us > Our People > Research Students > Ms Hanyu ZHANG
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Mr. Chunghim SO | Mr. Dong LIANG | Mr. Milan RAI | Ms. Jing ZHANG | Ms. Shuwen JIA | Ms. Wing Yan LAU | Ms. Yingkun CUI | Ms Jingfang Jennifer BIAN | Mr Shashi Kant CHAUDHARY | Ms Meng CHENG | Mr Ka Wai Jimmy CHEUNG | Ms Hang I Christie LAM | Ms Hoi Lam LI | Ms Sonal Aswin VYAS | Mr Kin Ken WAN | Ms Biyue GUO | Ms Li PAN | Ms Qi TAN | Mr Mezbah UDDIN | Ms Rong LI | Ms. Yuanyuan LIANG | Ms Anqi LYU | Mr Ying Hon SZE | Ms Qin WANG | Ms Hanyu ZHANG | Ms Wei YANG | Ms Mei ZHAO | Ms Yajing YANG | Ms Fangyu XU | Mr Sung Hei Jimmy TSE | Ms. Seen Hang CHAN | Mr. CHAN Kin Ho | Ms. AYERAKWAH Patience Ansomah | Mr. SO Ching | Mr. CATRAL Kirk Patrick Carreon | Mr. LIU Zhengji | Mr. LU Daqian | Ms. QIU Chunting | Mr. YANG Xiayin

Ms Hanyu ZHANG

Ms Hanyu ZHANG
PhD Student

ORCiD 0000-0003-4932-1887

Title of project:
Myopia control using optimized optical defocus in schoolchildren – a randomized double-masked control trial

When correcting myopia by traditional spectacle lens, on-axis light will focus on fovea, while paraxial light will focus behind the retina leading to peripheral hyperopic defocus. And, peripheral hyperopic defocus could lead to myopia progression. On the contrary, myopia progression could be controlled by inducing myopic defocus at the peripheral retina in animal studies. In our current study, we modified a defocus incorporated soft contact lens aimed to obtain better myopia control effects.

This study is highly relevant to Hong Kong and even Greater China where the prevalence of myopia is extremely high. The long term benefit would be preventing and reducing myopia to a level that will minimize the risk of myopia related retinal complications, and thereby minimize the enormous burden on the economic cost and health care system.