When photons strike rhodopsin molecules, 11-cis-retinol (a form of vitamin A) is converted into trans-retinol, which is necessary for the transmission of light information through the retina and on to the brain. Temporary blindness, such as the inability to see immediately after staring at a very bright light, is due to over-activation of the rhodopsin molecules, which require a short time to reset. Computer generated image. | |
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