Is Blue Light Good For Night Vision

The biggest factor in protecting your night vision is the brightness or illumination level of the light.

Is blue light good for night vision.

Effects of blue light on the circadian system and eye physiology international society for chronobiology. Researchers agree that blue light from led devices like your smartphone or. 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.

This has a more significant effect on night vision retention than does the choice of red or green. 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. 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.

However as it turns out green light or blue green offers some advantages over red as a means to retain night vision capability. Biological night vision or scotopic vision your vision under low light conditions is a topic that has a wide array of information out there. The eye is not very good at blocking blue light. Hev blue light rays make the sky look blue.

Human eyes have receptors that contain a photopigment called melanopsin that is sensitive to blue light. Blue light and the circadian rhythm. Amber lenses to block blue light and improve sleep. 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.

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. 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. Recently there has been a move to green and blue green light precipitated in large part by the military s change to green which itself has been primarily motivated by the increased use of night. Before the technological age blue light primarily came from sunlight.