Shoot straight? Not a chance! Binocular Vision - Page 2

Shoot straight? Not a chance! Binocular Vision

This is a discussion on Shoot straight? Not a chance! Binocular Vision within the General Firearm Discussion forums, part of the Related Topics category; Originally Posted by 1942bull All people with vision in two eyes have binocular vision. A person who can only see with one eye has monocular ...

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Thread: Shoot straight? Not a chance! Binocular Vision

  1. #16
    VIP Member Array Sister's Avatar
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    Quote Originally Posted by 1942bull View Post
    All people with vision in two eyes have binocular vision. A person who can only see with one eye has monocular vision. So your affliction is more complex than having binocular vision. Each eye sees an object from a different point of view since our eyes are separated by distance. So we are actually seeing two different images that the sight center in the brain merges into one that we can recognize. That is how we have depth perception. Monocular people do not have it.
    <snip>
    I found an image of how a person with stereopsis sees a target. The top image is normal vision, and the bottom is stereopsis vision.
    1942bull I believe you hit the nail on the head! That word Stereopsis, had to look it up and when I saw depth perception I knew exactly what it was, the Ehlers-Danlos! Has to be.

    At the ophthalmologist office I gave the doctor this handout and she was happy to have it, said she had only heard about it a little bit in school (not comforting but getting use to it with Ehlers)

    https://totaleyecare.com/ocular-comp...nlos-syndrome/



    • Blurred vision that comes and goes; difficulty in accommodation
    • Diplopia (double vision) — out of one eye, or with both eyes open
    • Photophobia (light sensitivity)
    • Complete, or almost complete, loss of vision in one eye that lasts a few minutes; migraine auras, scintillating scotomas
    • Dry eyes
    • Tunnel vision
    • Flashes of light or a curtain over their vision
    • Vision that is not fully correctable with glasses or soft contact lenses. (Doctors should perform corneal topography on all patients with unexplained blurred vision.)
    • Myopia (nearsightedness) that increases very quickly
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  2. #17
    Ex Member Array AzQkr's Avatar
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    Quote Originally Posted by LimaCharlie View Post
    I see two guns when I shoot with both eyes open, but one is more shadowy. It has not been a problem for me.
    It's called a ghost image. I've got people to shoot very well with this condition in two ways

    1. close the non dominant eye
    2. Discover which is the ghost, ignore it and shoot the non ghosted gun.

    Ghosting will usually be resolved by squinting, closing the non dominant or ignoring the ghosted gun once it's determine which is which.
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  3. #18
    VIP Member Array LimaCharlie's Avatar
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    Quote Originally Posted by AzQkr View Post
    It's called a ghost image. I've got people to shoot very well with this condition in two ways

    1. close the non dominant eye
    2. Discover which is the ghost, ignore it and shoot the non ghosted gun.

    Ghosting will usually be resolved by squinting, closing the non dominant or ignoring the ghosted gun once it's determine which is which.

    I am left-handed, but very right-eye dominant. I switched to shooting and carrying right-handed at Camp Pendleton in 1969. I mainly practice one-handed and point shooting close up. When I target shoot a handgun at longer distances with either hand, I close my left-eye.
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    Quote Originally Posted by AzQkr View Post
    Seen this in many students, either seeing two guns or two targets.

    2 solutions that have worked in the courses

    1. Squint, the double goes away
    2. Shoot with just the dominant/master eye open

    Binocular vision dysfunction (BVD) is a visual condition where the line of sight from one eye tends to be slightly out of alignment with the line of sight from the other eye (usually vertical) and this puts heavy strain on the eye muscles as they are constantly trying to correct the alignment to achieve single focus.
    Quote Originally Posted by AzQkr View Post
    It's called a ghost image. I've got people to shoot very well with this condition in two ways

    1. close the non dominant eye
    2. Discover which is the ghost, ignore it and shoot the non ghosted gun.

    Ghosting will usually be resolved by squinting, closing the non dominant or ignoring the ghosted gun once it's determine which is which.
    So your “professional” advice to people with a medical condition that makes them see double is to squint? Seriously?
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  6. #20
    VIP Member Array LimaCharlie's Avatar
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    Quote Originally Posted by CWOUSCG View Post
    So your “professional” advice to people with a medical condition that makes them see double is to squint? Seriously?

    It's cheap.
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  7. #21
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    Quote Originally Posted by CWOUSCG View Post
    So your “professional” advice to people with a medical condition that makes them see double is to squint? Seriously?
    Now that is funny! “Doctor Eyeball I see dead people”, well son if you just squint you’ll be awlrite! 🤣

    Shoot straight?  Not a chance!  Binocular Vision-b7e77085-6081-47aa-9e24-6647a31d8069.jpeg
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  8. #22
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    Quote Originally Posted by M1911A1 View Post
    Stop drinking so much Bourbon, and it'll go away.
    Au contraire. It cut four of me down to two. You'll just have to deal with both of them.
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  9. #23
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    Quote Originally Posted by Sister View Post
    Now that is funny! “Doctor Eyeball I see dead people”, well son if you just squint you’ll be awlrite! 🤣

    Click image for larger version. 

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    Look at him squint! That guy must be able to see real good!
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  10. #24
    Ex Member Array AzQkr's Avatar
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    Quote Originally Posted by CWOUSCG View Post
    So your “professional” advice to people with a medical condition that makes them see double is to squint? Seriously?
    It's ONE of the ways I listed that we discovered alleviates the ghosting gun or two targets, yes. If that way doesn't work, we move onto the next discovery that's worked for past students. Any of the students who've had their ghosting or double target dilemma corrected by one of the methods I mentioned will tell you yes, not only am I serious, but I solved their problem using one of the methods mentioned.

    I'll bet you can't tell me the difference between a master eye and a dominant eye. Or the 16 variations of eye dominance. I'll bet there's nary an eye doctor that can answer those questions off the top of his head.

    I can, got any other smart arsed comments you'd like to discuss about what I've actually observed and corrected in students over the last 15 years??

  11. #25
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    Quote Originally Posted by OldVet View Post
    I have that. Double vision in either eye, one image above the other, slightly off center. Closing one or the other doesn't help. Worse at night with double tail lights. I mention it to the eye docs and get no explanation.
    That's called monocular diplopia. One eye; two images. It can be caused by severe astigmatism and is sometimes a bad LASIK result. It is a corneal defect and is easily corrected by scleral contact lenses, which are quite comfortable. With that much astigmatism it is difficult to correct with the cylinder and sphere corrections available in glasses. If you bring the two images together, the spherical power required will put the image way out of focus.

    It is fairly common after LASIK. I have monocular polyopia - one eye; many images. With scleral contacts I see 20/15.

  12. #26
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    Quote Originally Posted by LimaCharlie View Post
    I am left-handed, but very right-eye dominant. I switched to shooting and carrying right-handed at Camp Pendleton in 1969. I mainly practice one-handed and point shooting close up. When I target shoot a handgun at longer distances with either hand, I close my left-eye.
    Just the opposite for me. I'm left eye dominant and shoot primarily right handed, but can shoot both nearly equally as well. Long gins/shoulder fired weapons are from the left shoulder, my dominant eye.

  13. #27
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    I only have one eye. The other one got blown up. If I ever see two of anything, I'll be in major-league trouble....
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  14. #28
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    Quote Originally Posted by ButterSmooth View Post
    That's called monocular diplopia. One eye; two images.
    I had a cataract removed in my right eye in July, and I have noticed the double vision in that eye is gone, or at least minimized as to make it not noticeable. Now if I could just get rid of the floating gnats...
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  15. #29
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    @Sister , I looked for more info about stereopsis and shooting. Fond very little that info. I did find an article about has slight relationship at https://www.clay-shooting.com/coachi...f-vision-pt-1/, but it is not on point. Most of the article about stereopsis are about depth perception not double vision. I did read something on a forum that suggested a person try a red dot or laser sight to compensate. There was no reply so no meaningful info. It did make me wonder if a red dot would make a difference. If you know someone with one maybe you ought to try it. However, based upon that target shown earlier, I think you are shooting better than many with near perfect vision.

  16. #30
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    Quote Originally Posted by 1942bull View Post
    @Sister , I looked for more info about stereopsis and shooting. Fond very little that info. I did find an article about has slight relationship at https://www.clay-shooting.com/coachi...f-vision-pt-1/, but it is not on point. Most of the article about stereopsis are about depth perception not double vision. I did read something on a forum that suggested a person try a red dot or laser sight to compensate. There was no reply so no meaningful info. It did make me wonder if a red dot would make a difference. If you know someone with one maybe you ought to try it. However, based upon that target shown earlier, I think you are shooting better than many with near perfect vision.
    Thanks Bull. I've got a red dot on a rifle and we're going to try that out soon, hopefully it will be a solution.
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