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Thread: Hard Time Seeing Targets(age related)

  1. #71
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    I had a chance today to look threw some red dots they were mounted on hand guns but WOW what a difference compare to iron sights. With or without my glasses i could see the targets better. It might look different in the woods but still a big improvement.
    Last edited by heat-ar; 02-22-13 at 21:36.

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    Re: Hard Time Seeing Targets(age related)

    Quote Originally Posted by heat-ar View Post
    I had a chance today to look threw some red dots they were mounted on hand guns but WOW what a difference compare to iron sights. With or without my glasses i could see the targets better. It might look different in the woods but still a big improvement.
    This. My plan is red dots (in the generic sense since technology varies widely) for a CQB type defensive gun & scopes for distance work . When the eyes can no longer focus on both long and close objects you gotta do what you gotta do.

    Sent from my Droid RAZR MAXX using Tapatalk2

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    Interesting Hmac - so, contrary to what I thought, it's not the repeated stresses placed on the muscle structures that reshape the lens (to change focus), but the naturally decreasing flexibility / pliability of the lens itself? I guess I'm ignorant - first time I've heard this - can you PM / post something (not too med journal-y) that might give me / others a head start on learning more?

    If it's the lens itself, then are there implications (either positive or negative) for LASIK in one's 40's / 50's / later? Many thanks.

    /not a doc

    Quote Originally Posted by Hmac View Post
    This is an old myth that has no basis in fact. You won't damage your eyes or vision by reading in low light, reading a lot of fine print, or computer screens. It would be like saying that taking a picture with your camera in low light will damage it.

    As the eye ages, you get decreased flexibility of the lens and it therefore loses its ability to reshape sufficiently to allow close focusing (presbyopia), and fatigue at the end of the day may exacerbate that, but that has nothing to with fine print or low light over the previous years.

  4. #74
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    Quote Originally Posted by Hdog83 View Post
    Interesting Hmac - so, contrary to what I thought, it's not the repeated stresses placed on the muscle structures that reshape the lens (to change focus), but the naturally decreasing flexibility / pliability of the lens itself? I guess I'm ignorant - first time I've heard this - can you PM / post something (not too med journal-y) that might give me / others a head start on learning more?

    If it's the lens itself, then are there implications (either positive or negative) for LASIK in one's 40's / 50's / later? Many thanks.

    /not a doc
    https://www.google.com/search?q=pres...&client=safari

    Loss of lens elasticity, enough that the ciliary muscles progressively lose their ability to overcome the stiffness of the lens and can't reshape the lens as well as they used to.

    LASIK can be done at any age, but if you have both eyes corrected for excellent distant vision, you still won't be able to focus on near objects. IOW, LASIK won't counteract the effects of presbyopia - LASIK has nothing to do with the lens of the eye.
    Last edited by Hmac; 02-23-13 at 05:38.

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    Quote Originally Posted by Hmac View Post
    https://www.google.com/search?q=pres...&client=safari

    Loss of lens elasticity, enough that the ciliary muscles progressively lose their ability to overcome the stiffness of the lens and can't reshape the lens as well as they used to.

    LASIK can be done at any age, but if you have both eyes corrected for excellent distant vision, you still won't be able to focus on near objects. IOW, LASIK won't counteract the effects of presbyopia - LASIK has nothing to do with the lens of the eye.
    I went and got checked out for LASIK and thats exactly the reason I didn't go for it and went low tech instead.

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    I do remember the first time i saw a eye doc he said something about when you get into your 40's the lenses have a harder time focusing if at all. Now why younger people or children have this problem i do not know since its not age related in them.

  7. #77
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    Leupold 1.5-5x CM-R2 has been nice on my "do all" AR.

    My eyesight is good but I like more magnifcation in general.

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    Quote Originally Posted by carlo1776 View Post
    I went and got checked out for LASIK and thats exactly the reason I didn't go for it and went low tech instead.
    I have never check into lasik but some older people that have were told it could be done but at there age the eyes deteriorate fast and the good results you got from the surgery COULD be short live. Not putting this out there as fact, just 2 older people told me this from there eye doctors..

  9. #79
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    Quote Originally Posted by carlo1776 View Post
    I went and got checked out for LASIK and thats exactly the reason I didn't go for it and went low tech instead.
    There are some other options for correction of presbyopia. An artificial lens can be implanted that obviously has more flexibility. IIUC, it's used more after lens extraction for cataracts. Some places, it's used as a primary treatment for presbyopia but IMHO it's not necessarily a mature technology - the results aren't as predicable as LASIK. I've found it easier to just pick up cheap reading glasses from Amazon. I would gladly exchange good distant vision for good close up vision when I can just pick up a pair of cheap reading glasses for close-up vision. That's what I did when I opted for refractive keratoplasty 20 years ago. Now, I still don't need correction for 20/20 distant vision, but I do need readers. I use 2.5 diopters for reading and 1.5 diopters for seeing the front sight of my pistols.

    The other option is monocular correction via LASIK. One eye is corrected for distant vision, the other for closer up. Not everybody's brain can handle that and process the two different focal lengths. With practice, I've found that it works for me, the reason I have a stick-on 1.5 diopter lens on the dominant eye of my shooting glasses and the other lens uncorrected.




    Quote Originally Posted by heat-ar View Post
    I do remember the first time i saw a eye doc he said something about when you get into your 40's the lenses have a harder time focusing if at all. Now why younger people or children have this problem i do not know since its not age related in them.
    In an otherwise normal eye, the lens in children is plenty flexible for close and distant focusing. It would be a problem if they are hyperopic (far-sighted). The shape of their eye might make them far-sighted enough that focusing close up exceeds the refractive capability of even a normal lens. That has nothing to do with the flexibility of the lens...it's about the shape of the eye.

    /
    Last edited by Hmac; 02-23-13 at 10:34.

  10. #80
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    Quote Originally Posted by Hmac View Post
    There are some other options for correction of presbyopia. An artificial lens can be implanted that obviously has more flexibility. IIUC, it's used more after lens extraction for cataracts. Some places, it's used as a primary treatment for presbyopia but IMHO it's not necessarily a mature technology - the results aren't as predicable as LASIK. I've found it easier to just pick up cheap reading glasses from Amazon. I would gladly exchange good distant vision for good close up vision when I can just pick up a pair of cheap reading glasses for close-up vision. That's what I did when I opted for refractive keratoplasty 20 years ago. Now, I still don't need correction for 20/20 distant vision, but I do need readers. I use 2.5 diopters for reading and 1.5 diopters for seeing the front sight of my pistols.

    The other option is monocular correction via LASIK. One eye is corrected for distant vision, the other for closer up. Not everybody's brain can handle that and process the two different focal lengths. With practice, I've found that it works for me, the reason I have a stick-on 1.5 diopter lens on the dominant eye of my shooting glasses and the other lens uncorrected.

    /
    The LASIK Dr. mentioned the 1 eye alternative but I realy didn't want to experiment with it as it's a one way proposition. I stuck with glasses (see my post on previous page of this thread)

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