User Guide

1-6
Chapter 1: Product Introduction
1.5.3 EyeCheck Function
The EyeCheck function contains three patterns: (1) Snellen Chart
(2) Amslter Grid (3) Astigmatism.
1. Snellen Chart
P1 P2 P3
L0.1
L0.2
L0.3
L0.4
L0.5
L0.6
L0.7
L0.8
L0.9
L1.0
L1.2
• To switch between P1~P3, move the 5-way button down.
2. Amslter Grid
While focusing at the center point, to check all lines should be straight.
3. Astigmatism
To check each line should be the same width.