LG 49LF5400 Owner's Manual

9

•  Viewing Time

 

- When watching 3D contents, take 5 to 15 minute breaks every 

hour. Viewing 3D contents for a long period of time may cause 
headache, dizziness, fatigue or eye strain.

•  Some users may experience a seizure or other abnormal symptoms 

when they are exposed to a flashing light or particular pattern 
from 3D contents.

•  Do not watch 3D videos if you feel nausea, are pregnant and/ or 

have a chronic illness such as epilepsy, cardiac disorder, or blood 
pressure disease, etc.

•  3D Contents are not recommended to those who suffer from stereo 

blindness or stereo anomaly. Double images or discomfort in 
viewing may be experienced.

•  If you have strabismus (cross-eyed), amblyopia (weak eyesight) or 

astigmatism, you may have trouble sensing depth and easily feel 
fatigue due to double images. It is advised to take frequent breaks 
than the average adult.

•  If your eyesight varies between your right and left eye, correct your 

eyesight prior to watching 3D contents.

•  Do not watch 3D contents when you feel fatigue from lack of sleep, 

overwork or drinking. 

•  When these symptoms are experienced, stop using/watching 3D 

contents and get enough rest until the symptom subsides.

 

- Consult your doctor when the symptoms persist. Symptoms may 

include headache, eyeball pain, dizziness, nausea, palpitation, 
blurriness, discomfort, double image, visual inconvenience or 
fatigue.

•  Viewing Distance

 

- Maintain a distance of at least twice the screen diagonal length 

when watching 3D contents. If you feel discomfort in viewing 3D 
contents, move further away from the TV.

•  Infants/Children

 

- Usage/ Viewing 3D contents for children under the age of 5 are 

prohibited.

 

- Children under the age of 10 may overreact and become overly 

excited because their vision is in development (for example: 
trying to touch the screen or trying to jump into it). Special 
monitoring and extra attention is required for children watching 
3D contents. 

 

- Children have greater binocular disparity of 3D presentations 

than adults because the distance between the eyes is 
shorter than that of adults. Therefore they will perceive more 
stereoscopic depth compared to adults for the same 3D image.

•  Teenagers

 

- Teenagers under the age of 19 may react with sensitivity due 

to stimulation from light in 3D contents. Advise them to refrain 
from watching 3D contents for a long time when they are tired.

•  Elderly

 

- The elderly may perceive less 3D effect compared to the young. 

Do not sit closer to the TV than the recommended distance.

•  Make sure to use LG 3D glasses. Otherwise, you may not be able to 

view 3D videos properly.

•  Do not use 3D glasses instead of your normal glasses, sunglasses or 

protective goggles.

•  Using modified 3D glasses may cause eye strain or image 

distortion.

•  Do not keep your 3D glasses in extremely high or low 

temperatures. It will cause deformation.

•  The 3D glasses are fragile and are easily scratched. Always use a 

soft, clean piece of cloth when wiping the lenses. Do not scratch 
the lenses of the 3D glasses with sharp objects or clean/wipe them 
with chemicals.