Lenovo D27-40 27" Monitor - Manual (Page 14)

2-4 D27-40 LCD Monitor User’s Guide

Viewing Angle
Neck fatigue and pain may result from prolong turning of the head to see objects on the monitor
screen. To minimize this, position the monitor directly in front so the head, neck and torso face
forward to the screen. It is recommended that monitor should not be more than 35 degrees to the
right or left of the head.
Monitors should also not be placed too high or too low as this contributes to awkward posture
which results to muscle fatigue.
Reduce Flicker
Monitor flickers refer to repeated changes in monitor light intensity. It is caused by several
factors including but not limited to voltage fluctuations. Reducing flicker minimizes eye strain
and headaches. ThinkVision monitors allow users to use high frequency display modes that can
effectively reduce flicker.