59
Participants
Start Date
August 1, 2019
Primary Completion Date
January 31, 2020
Study Completion Date
January 31, 2020
Visual acuity assessment by ETDRS charts
All participants must complete VA measurement of both eyes using 2 charts including the ETDRS letters chart and ETDRS numbers chart.
HKSDS Program, Hong Kong
The University of Hong Kong
OTHER