ansurette

I am curious, and if I am not posting in the correct section feel free to move the topic, but what happens to light after sight? I've googled as much as I can, and perhaps I didn't word it correctly in my search, but what happpens to light after contact with your eye? Perhaps the best way to explain my question would be to drop the E-bomb, but if E=mc^2, how much light is reflected, absorbed, transfered as heat, etc. after all is said and done, and you "see the light" is there anything leftover, and in what form? My thought on posting it here would be in the event of travel equal to or greater than the speed of light. I am trying to put together some ideas and needed a better understanding of light in relation to the human eye.