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Did your parents ever tell you not to stare directly at the sun They were right. But there are other dangerous lights, too. If you stare at anything that emits a certain wavelength of blue light, you could quietly and irreversibly burn out your eyes. Have you heard of blue light hazard If you work outside, or with welding equipment it should sound familiar. People who work with arc-welders, who work i
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stanley cup price sun, and who work under certain kinds of light have safety procedures telling them how long they can stare, and what eye protection they can use. If they haven ;t, they should, because blue light hazard is terrifying. The Visual Cycle In the retina of your eye sits an interesting little team, hand in hand. One member of the team is called an opsin. The other is called 11-cis ret
termo stanley inal or more generally called a chromophore. The two are connected, and passive, until a photon hits them. At that point, the 11-cis retinal goes through a process called isomerization, which is a fancy way of saying, 8220 ame atoms, different shape. The 11-cis retinal shifts around until it is in a new forme, called all-trans retinal. The opsin starts the process of phototransduction, meaning it changes the energy from the incoming photon to an electric signal that can travel along the nerves and get to the brain. Meanwhile, back in the eyeball, the isomerization process has to be reversed for the eye to be able to properly receive the next photon. Groups of
