Samsung UN46ES7500F E-Manual page 203

IMPORTANT HEALTH AND SAFETY
INFORMATION FOR 3D PICTURES.
Read and understand the following safety information
before using the TV's 3D function.
Warning
[
ΠSome viewers may experience discomfort
while viewing 3D TV such as dizziness,
nausea and headaches. If you experience
any such symptom, stop viewing 3D TV,
remove the 3D Active Glasses and rest.
ΠWatching 3D images for an extended
period of time may cause eye strain. If
you feel eye strain, stop viewing 3D TV,
remove your 3D Active Glasses and rest.