Kính Đo Khoảng Cách Đồng Tử

Recently, I had my pupillary distance measured by two different approaches, producing readings 3.5mm apart. So, I designed this as a way to double check those measurements.

USE AT YOUR OWN RISK. Though this design worked well for me, I cannot guarantee the accuracy of this device. Take the glasses away from your face before measuring the eyepiece distance with calipers.

Category: Biology