Any eye doctors out there?? With the human eye, can you see color (with cones) without your rods (for B&W)?

Question

I seemed to read way too deep into this question on one of my quizzes, and got marked wrong for this. I'm thinking about writing an essay about it if i'm actually right.~~~~~~~~~~~~~~~~~~****The question was: The elements responsible for accurate color vision are: (A. Cones) (B. Rods) (C. Photosensitive pigments)
(D. A & C) (E. All of the above) ---- {Correct answer is "D," however I think it is "E."}****~~~~~~~~~~~~~~~~~~~~~~~~~~With that being said, I know that color is processed with the Cones and Photosensitive Pigments, however, without the use of Rods, I didn't think it was possible to view colors accurately, or even at all, because light would not be processed through without the "Rods." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Another reasoning behind this is I've never heard of someone being "Black, grey or white" blind, and being able to see color. I've only heard of someone being color blind.~~~~~~~~~~~~~~~~~~~~~~~~~~~~Please reference any websites so I can research also!

I understand that you can see black and white without colors (color blindness), but can you see colors without black and white (i guess that would be B&W blindness)... Is that possible?? I didn't think it was.

Answer 1

sorry, I agree that D is correct. (
http://www.abledata.com/abledata_docs/Night_Vision.htm )

As perception of white (or any gray levels) is the equal stimulation of all three different photopigments/photoreceptors, you can see all grey levels using your cones only. No mystery about it. If you understand additive color mixing you can use Photoshop to prove this on your computer. Or you can use colored transparencies and a projector. Research additive color mixing if you are not familar with it. So you can have no rods (look up night blindness) and still see black (no stimulation) and white (equal stimulation of all three cones) during the day time using your cones only. So the answer is no, you can not be "black, grey, white blind" , but it doesn't have to do anything with the presence or absence of rods in your eyes.

Though there seems to be a really minor effect of rods on the perceived hue, colors could be somewhat less saturated,and it seems to rely on interaction of nerve cells other than the primary photoreceptor cell. Generally Pubmed or Google Scholar should both allow you to search large databases of science publications which haven't made it into textbooks.

Answer 2

The different hues are mixes of blue with other colors. Cameras are not organic and don't have rods and cones. For color film, there are at least three layers of emulsion that are sensitive to different colors. Digital cameras typically use sensors and filters to differentiate between the colors.

Answer 3

Only the cones can SEe the colors. The rods can not see the colors . Their interest lies in the fact that they have a lower threshold than the cones. So you can see when the night is not fallen completely.
But make the experiment. When the night is not completely fallen, you can see the leaves but you can not give the color