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Scope for Astigmatism

Discussion in 'Optics' started by Byrd666, Mar 20, 2018.

  1. dee

    dee Well-Known

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    I have astigmatism and am near sighted. I found it's better for myself to remove my glasses when shooting with optics. The lenses of my glasses add more parallax issue's. Also with an astigmatism it makes focusing the ocular a bit more finicky it seems.
     


  2. rman

    rman Well-Known

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    oh I'm way more self-conscious /vain than that. the "pupilary distance" is one thing, but I need to try on 48 pairs to make sure I don't look lame.

    37 years old and 4 kids, and my strict upbringing still has lasting damaging effects. As mentioned in the OC thread, I still dress like a dipshit. a childhood of being made fun of...
    I'm not 100% sure, but I think it's independent eye to eye. It's basically the round shape of something that is instead oblong/football shaped.

    Yes, red dots turn into whatever. For me, 4 MOA red dot turns into a 20 MOA triangle (3 dots in triangle shape).

    I have never had any issues with crosshairs or recticles. Astigmatism affects the way your eyes see light... An illuminated recticle (ACOG style) works just fine. It's the weird holographic stuff that gets distorted.

    Sent from my SIG Sauer
     
  3. F350-6

    F350-6 TGT Addict

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    I don't use glasses when shooting either. For me, it's not one or both eyes. The astigmatism affects me in two ways. A moving object coming towards me, like a ping pong ball, jumps to one side when it gets to a certain point, so it's hard to track. Over longer distances, it makes a straight line look curved. Before I knew I had an astigmatism, I built a pipe fence. I set each corner first, then closed one eye and just eyeballed a straight line when setting the rest of the poles (around 500' or so). The end result was a very slight, very consistent arch in the fence line. After it was pointed out to me, I ran a string line on the rest of the fence.

    PD is a measurement you get from the eye doctor. I was talking about the size of my glasses. Since most glasses online are advertised in mm dimensions, I took a set of calipers to the glasses I already had (after trying on 48 pairs in front of the wife for her approval) and then just matched the online lenses and frames to the size of my existing ones to keep the same look.
     
  4. ed308

    ed308 Well-Known

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    I wear my glasses when shooting. Illuminated and/or plain reticles work fine for me. Only the red dots are a problem. But as I get older, I need more powerful (and expensive) scopes.
     
  5. Byrd666

    Byrd666 TGT Addict

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    Thanks for the info. so far. When I see him (hopefully) sometime next week I'll pass on what I've learned so far. I'm thinking, as with a lot of gun related stuff, it'll be a bit of trial and error with some patience thrown in.
     
  6. dmancornell

    dmancornell Member

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    It is specific to each eye. Eccentricity in the eyeball leading to different focal lengths in your viewing image.

    My two cents is to go to a proper optometrist, get a proper exam and a good pair of glasses, and wear them while shooting. If you get good quality plastic lenses they double as eye protection. I have severe myopia and astigmatism concurrently, but with proper correction I have no issue finding the crosshair on fine duplex scopes, and no starburst effect on Aimpoints.
     
  7. Byrd666

    Byrd666 TGT Addict

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    He's trying avoid the glasses route. Was one of my first suggestions to him.
     
  8. dmancornell

    dmancornell Member

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    Yeah but there is really no avoiding the impact on shooting that loss of resolution will have. Better to bite the bullet and get used to it.
     
  9. Byrd666

    Byrd666 TGT Addict

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    You know that. I know that. HE Knows it, just trying not too. As far as I'm concerned, you are preaching to the choir with the glasses thing.
     

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