Is Blue Light Good For Night Vision

Before the technological age blue light primarily came from sunlight.

Is blue light good for night vision.

Because blue light has been proven to affect the body s circadian rhythm our natural wake and sleep cycle limiting screen time to one to two hours before bed and using night mode on electronic devices is a good idea for minimizing blue light exposure affecting our ability to fall asleep. Human eyes have receptors that contain a photopigment called melanopsin that is sensitive to blue light. Effects of blue light on the circadian system and eye physiology international society for chronobiology. Another argument in favor of blue light glasses is that they help you sleep better at night.

Amber lenses to block blue light and improve sleep. What i d like to do in this article is not only attempt to clear up some misconceptions of what aids in better biological night vision but offer some methods of preserving your night vision. The biggest factor in protecting your night vision is the brightness or illumination level of the light. Biological night vision or scotopic vision your vision under low light conditions is a topic that has a wide array of information out there.

Trying to get some sleep. This has a more significant effect on night vision retention than does the choice of red or green. However as it turns out green light or blue green offers some advantages over red as a means to retain night vision capability. A red light has been the traditional choice for retaining your night vision since before wwii when the military settled on red as the best choice.

The higher degree of scattering of these rays is what makes a cloudless sky look blue. The eye is not very good at blocking blue light. Exposure to blue light is detected by the eyes and signals the pineal gland to suppress the secretion of the hormone. Too much exposure to blue light late at night through smart phones tablets and computers can disturb the wake and sleep cycle leading to problems sleeping and daytime tiredness.

High energy blue light rays scatter more easily than other visible light rays when they strike air and water molecules in the atmosphere. Blue light and the circadian rhythm. The older style of blue light glasses that come with yellow lenses do assist with night driving since they also filter out lower energy harmless visible blue light hence clearer vision at night as well as some of the harmful high energy blue light. Hev blue light rays make the sky look blue.