Blue light blocking glasses will help you fall asleep easier and reduce eyestrain which causes dry and itchy eyes, bad posture and back pain. The harmful wavelengths from LCD and LED screens have shown to inhibit the production of Melatonin, which is why many of us struggle to fall asleep after staring at a screen before bed. LED Grow lights can damage the retina, so anyone doing so should have a high quality pair of glasses as such.
These are FDA Approved lenses that block up to 99% of harmful wavelengths including blue light from TV and digital screens (as well as LED grow lights).
Where during the day if you have heavy computer usage or at night while watching TV or playing games on a blue light emitting device. Use along with an overall strategy to address sleep issues as related to a circadian rhythm imbalance.
Find blue light blocking glasses here.