Can sense organs like the eye really evolve?

i see no problem all you need is a cell that reacts to light and is stimulating a nerve when its hit by light, you dont need a whole region of the brain devoted to despiper the light stimulus in to a picture all you need is a stimuly that shows the critter wheter its light or dark evolution takes over from there to make all kinds of eyes you want and all kind of brain regions that despipher the stimulie of light

Ussles eyes under the skin One of the best long distance eyes Strange eye Best Night vision eye Best motion detection eye Best all arround view eyeFor every situation there is an eye so where is your diversity of eyes lacking?or do you think that the system of seeing is only possible trough eyes??Bats use sonar, as do whales.Some snakes use heatvisionSome sharks also see trough by sensing biolectricityWhat is not diverse enough for you???

On the same note we have tones of wehicles from carts to trains, to cars, to planes, ....... And all use the same round wheel why is that because all these things had the same designer??? or because its the best solution?

yust a question um what kind of eye would suit your idea what evolution would produce ???

But they are notEyes firstly are just tthe lense of the camera the eye does not see the brain does.Eyes do not have flash so they cant make a picture in pich darknessEyes cant zoom.Eyes deteriorate, the lens goes bad, the muscles controlling the lens go bad, stuff grows on them that impairs vision ...., The 50 year old camera i have still works like the day it was bought.Eyes dont have factory testing some are just broken the day you get them (birth) where every camera has a warranty.I could go on but eyes are clearly inferior to cameras.

There is but you expect to see square eyes that use sound waves to see that just does not work evolution cant make something that does not work or ever will.All eyes are round because it worksAll eyes have some thing that allows light to enter them because that is how they workAll eyes range in diameter from x cm to y cm because they cant get any smaller, and any larger is a waste of resource....
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..there is only so much diversity an eye can have that utelises its best efficiency for the task.We dont have the eyes of a Hawk because the need was never selected for that strongly we have the optimum eye for our environment, the positive efects of a hawks eyes are smaller in comparrison for the resources it would use that we spend on other parts, Better eyesight would need a larger portion of the brain devoted to it and so limiting other parts of the brain like the ones responsible for logic and reasoning thus making us actually far less effective at passing on our gens because we would be out competed.Perhaps what you are really asking is why dont we see different sense organs.Well we doYou have the eye
The sonar
Normal ear function
taste
tuch
infrareadand you have various ways in the way they are utilized like the snake smelling with its tung. So how do you really think they should look? Give me an example of the difference one would see.P.s. i really should not post stuff when im stoned so if all this makes no sense just ignore it

Because you believe we should see triangle shaped eyes whitout an opening for light, able to see sound wavesthey would not work and not be selected for, or the flaws would be selected against and we would get something similar to the eyes we have TOE. Edited by frako, : No reason given.

http://www.sciencedaily.com/...ases/2008/11/081119140705.htmSo only 2 cells guide the Zooplankton to the Light is this a simple enough eye for you cause i dont think it can get any simpler.