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Thread: Hard Time Seeing Targets(age related)

  1. #81
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    From childhood until 40-43 I had 20-10 vision. I could see like a fighter pilot.

    By 45 I occasionally needed a +1.00 reader. At 50 I began using prescription reading glasses 100% of the time.

    At 53 the readers became distance glasses. I returned to the eye doctor.

    At 54 (last fall) I wear bi-focals and qualify for cataract surgery but the Dr. wanted to wait due to this odd astigmatisum only found with fighter pilots. He wants to wait until he knows it is stable. The glasses aren't working so well today and my night blindness has become almost too severe to drive after dark. If I didn't have along business trip planned next month I would be back at the eye doctor today.

    I can still shoot irons under 40 yards with glasses (I think this is only due to muscle memory). So, I set irons at 1:30 and put a 4x ACOG on the top rail. Currently this is working well. on the AR. I need to buy 2 more optics but am putting this purchase off due to the cataract surgery I will get by the end of the year.

    As a visual person this has become a serious problem impacting all aspects of my life. Imagine having 30 power binocular eyes and going to crap eyes.

  2. #82
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    Quote Originally Posted by why1504 View Post

    As a visual person this has become a serious problem impacting all aspects of my life. Imagine having 30 power binocular eyes and going to crap eyes.
    I hear you. My brain turns 21 in June, unfortunately my body turns 60.

  3. #83
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    Quote Originally Posted by carlo1776 View Post
    I hear you. My brain turns 21 in June, unfortunately my body turns 60.
    My wife says I have a brain of a 15 year old.

  4. #84
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    Quote Originally Posted by Hmac View Post
    Especially at age 49, your ability to focus on the front site of your AR while being able to focus on the target beyond 40 yards is impaired due to presbyopia. A red dot sight such as Eotech or Aimpoint will help a lot since the dot is projected onto the same plane as the target. If your lens correction allows you to see a 100 yard target well, your shooting at that distance will improve.
    Hmac,
    Do Aimpoint red dot sights include a diopter adjustment, like a scope? I'm just concerned that I couldn't focus that close and it would all be a blur.

  5. #85
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    Quote Originally Posted by guitarman008 View Post
    Hmac,
    Do Aimpoint red dot sights include a diopter adjustment, like a scope? I'm just concerned that I couldn't focus that close and it would all be a blur.
    No, there's no need for diopter adjustment. There's no need for close focusing. Your eyes focus on the target, not on the reticle (dot). The red dot is collimated, so it's projected in the same plane as the target. Your eyes focus on the target, not on the red dot.

    Red dot sights are very simple to use. You look through it at the target, place the dot on the target, pull the trigger. If you see the target clearly and in focus, the red dot is in focus too. If you don't see the target clearly and in focus, then you have an eyesight problem, not an RDS problem.




    Not to complicate the issue, but parallax was mentioned. Most of these RDS are billed as "parallax-free". That's not exactly true, but parallax error is pretty minimal, especially at 50 yards and beyond. Closer than that and the parallax error is never any greater than the optical window (about 30mm) and far less than that if you have any kind of reasonably consistent cheek weld.

    It's usually considered preferable to shoot an RDS with both eyes open. Doing so obviously allows a greater field of view and therefore better "situational awareness". Both eyes open has no effect on focusing or accuracy - the reticle is still superimposed on the target. In fact, you can completely cover up the far side of the optic and with both eyes open you will still see the reticle superimposed on the target as seen with the other eye.
    Last edited by Hmac; 02-23-13 at 12:26.

  6. #86
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    Why1504 you made me remember a story. I got some chemicals in my right eye at work in 1988 and the doc flush it out and put a patch on that eye for a week i think. But i went back to the docs office and he took the patch off and everything look great. So i was ready to go and i was trying to leave and the doc said no sit back down and lets do a eye test. Everything went great and the only thing the doc told me was your eyes are great and good enough to be fighter pilots eyes. I never new what he meant by that until i got into my 40's. When i was younger i thought if you didn't wear glasses you saw the same thing i was seeing.But that was not the case i guess. With my glasses now i see 20/15 which is pretty good but it is still no where as good when i was younger. Off topic i know but why1504 made be remember the first time i really went to a eye doctor.

  7. #87
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    Quote Originally Posted by heat-ar View Post
    With my glasses now i see 20/15 which is pretty good but it is still no where as good when i was younger.
    The fact that your eyes changed shape, causing myopia, as you got older is unrelated to presbyopia, which is only related to the lens of the eye.

  8. #88
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    Quote Originally Posted by Hmac View Post
    No, there's no need for diopter adjustment. There's no need for close focusing. Your eyes focus on the target, not on the reticle (dot). The red dot is collimated, so it's projected in the same plane as the target. Your eyes focus on the target, not on the red dot.

    Red dot sights are very simple to use. You look through it at the target, place the dot on the target, pull the trigger. If you see the target clearly and in focus, the red dot is in focus too.




    Not to complicate the issue, but parallax was mentioned. Most of these RDS are billed as "parallax-free". That's not exactly true, but parallax error is pretty minimal, especially at 50 yards and beyond. Closer than that and the parallax error is never any greater than the optical window (about 30mm) and far less than that if you have any kind of reasonably consistent cheek weld.
    That's what i discover yesterday looking threw the red dot on a hand gun. Now the hand gun red dot mount might be out a little further because of the length of my arms and holding a hand gun where as the red dot will be place closer on a ar15 could be mounted closer if that matters. But with my far sighted glasses on or even with them off i like the red dot. The front iron sight seems to be blurring the target compare to the red dot.

  9. #89
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    When I was about 7 years old I remember going to the Dr. and him having me read the eye chart. He said "Read the smallest line you can read."

    I replied, "Copyright 1959........"

    He replied, "Where do you see that????"

    I walked up to the chart and said, "Right here on the bottom."

    He said, "Well your eyes are OK, I've never even seen that."
    Last edited by why1504; 02-23-13 at 12:37.

  10. #90
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    Quote Originally Posted by heat-ar View Post
    That's what i discover yesterday looking threw the red dot on a hand gun. Now the hand gun red dot mount might be out a little further because of the length of my arms and holding a hand gun where as the red dot will be place closer on a ar15 could be mounted closer if that matters. But with my far sighted glasses on or even with them off i like the red dot. The front iron sight seems to be blurring the target compare to the red dot.
    The reason your front sight is blurring is that it is too close to your presbyopic eyes to be able to focus on.

    Why are you even looking at the front sight if you're using a red dot sight? If you're using an RDS, the front sight on your rifle or handgun is totally irrelevant.

    The distance of the Red Dot Sight from your eye, whether it's on a handgun, shotgun, or rifle makes absolutely no difference relative to focusing.

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