Herman & Partners Optometric Clinic 兒童護眼中心 成人漸進鏡中心

荃灣西樓角路1-17號新領域廣場 9 樓 10 室

電話 : 2404 6618

www.eyecheck.hk

VA Calibration (250 px Letter H)

Measure the height of the displayed H in millimeters, then enter your working distance.

H

For children distance VA testing, keep the child at least 3 meters from the screen.