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Guest bigtex

Eye sight 20/20

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Guest bigtex

Is it just me or does anybody else wonder how good a fishes eye sight is?  Are they near or far sighted?  Can or do they have 20/20 vision.  I know water clarity has a lot to do with it but just in general.

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Thats a question in which the answer can only be speculated.....nobody has ever looked through the eyes of a bass as far as I know.

One would think that since a fish lives underwater,the eyesight would be sharp down below but.......

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Guest avid

I can't imagine that with all the millions of dollars spent on bass research that some biologist hasn't removed the lens of a bass to see how images are presented to the bass' brain.  I know the eyes have been disceted re: rods and cones for example.  Some googling would probably turn up alot of info.

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Here's what I've gathered from various sources.  I'm not a biologist or an ophthalmologist, so I don't know if this is all factual.  Someone please straighten me out if you know otherwise.

I don't think it comes as any surprise, but bass see color (very well), known by the cones in the photo sensory cells of their retina.  They see black/white/shades of gray, known by the rods in the photo sensory cells in their retina.  

Their eyes allow 5 times more light to enter compared to a human eye.  The extra light gives them sensory advantages over a human eye when it comes to distinguishing shapes, movement, etc...

Their field of vision is a full 180 degrees in each eye.  Where the vision overlaps in front of a bass, they have 'bonocular' vision.  This plays an important role in the 'strike zone' of a bass.  Their blind spots are behind their side fins back and underneath their belly.

As a bass get older, their vision actually gets better (wouldn't that be nice for us!).

Bass have day and night vision, but it takes upwards of two hours for the cones and rods to switch positions in the retina.  For humans, it takes about 30 minutes.  This is the period it takes eyes to adjust to changing light conditions going from dark to light, and light to dark.  You would think that it would have an adverse effect on catching bass at dusk and dawn, but as we've probably all experienced, this two hour adjustment doesn't seem to have a negative impact during these times.

In terms of a bass' ability to see through certain water conditions, I've always heard the general rule is 3-5 times further than what we see.  If you put your lure in the water and it disappears around 2 feet down, a bass can probably see that lure 6-10 feet.

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Bass have day and night vision, but it takes upwards of two hours for the cones and rods to switch positions in the retina. For humans, it takes about 30 minutes. This is the period it takes eyes to adjust to changing light conditions going from dark to light, and light to dark. You would think that it would have an adverse effect on catching bass at dusk and dawn, but as we've probably all experienced, this two hour adjustment doesn't seem to have a negative impact during these times.

That could explain why the bite is better at dawn and dusk.....THEY CANT SEE VERY WELL!They just hit anything during those times.

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Bass have day and night vision, but it takes upwards of two hours for the cones and rods to switch positions in the retina. For humans, it takes about 30 minutes. This is the period it takes eyes to adjust to changing light conditions going from dark to light, and light to dark. You would think that it would have an adverse effect on catching bass at dusk and dawn, but as we've probably all experienced, this two hour adjustment doesn't seem to have a negative impact during these times.

That could explain why the bite is better at dawn and dusk.....THEY CANT SEE VERY WELL!They just hit anything during those times.

Bass adjust faster than most species, so thats why the morning and evening bite is better. When the shad and bluegill are still trying to adjust the bass are out and eating.

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I don't know what kind of fish he was but,  that Incredible Mr. Limpet could see just like us, as long as he was wearing his glasses. :D ;D

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I am not so sure if it's they have 'perfect' vision per se, more that the way the objects reflect of their lenses. Kind of like a cat I guess..........maybe? :-/

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