Is Blue Light Good For Night Vision

Another argument in favor of blue light glasses is that they help you sleep better at night.

Is blue light good for night vision.

Exposure to blue light is detected by the eyes and signals the pineal gland to suppress the secretion of the hormone. 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. Amber lenses to block blue light and improve sleep. The eye is not very good at blocking blue light.

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. Before the technological age blue light primarily came from sunlight. 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. 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. The higher degree of scattering of these rays is what makes a cloudless sky look blue. High energy blue light rays scatter more easily than other visible light rays when they strike air and water molecules in the atmosphere. Hev blue light rays make the sky look blue.

Trying to get some sleep. Biological night vision or scotopic vision your vision under low light conditions is a topic that has a wide array of information out there. 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. Not enough exposure to sunlight in children could affect the growth and development of the eyes and 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. This has a more significant effect on night vision retention than does the choice of red or green. The biggest factor in protecting your night vision is the brightness or illumination level of the light. However as it turns out green light or blue green offers some advantages over red as a means to retain night vision capability.