Getting the right lenses

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westerngriz

Getting the right lenses

Post by westerngriz »

I just visited the eye doctor for a regular check up on my vision. Near the end I asked him about making lenses for a pair of MEC glasses. He said it would be cheaper to have a "gun shop" do it for me. He did hand me my prescription though.
Im asking what you guys did to get the correct prescription and lenses? where did you go?

My perscription:
-.25 -.75
-.25 -.75
Matt
peterz
Posts: 355
Joined: Sat Dec 05, 2009 11:31 am
Location: Great Falls, VA

Post by peterz »

Every country writes eye prescriptions a little differently. Could you identify the meaning of the numbers clearly? Thanks.
tsokasn
Posts: 299
Joined: Tue Sep 11, 2007 12:22 am
Location: Athens,Hellas

Post by tsokasn »

When I had to cut the right lense for my situation,I did it a bit different...
Having the opportunity to have in hand 8 different increments of doctor's correcting lenses,I went to the shooting range and tryed what was best for my eye to have a clear front sight picture.
It was nothing like my original prescription from what I remember.
Hope that helped.
Guest

Post by Guest »

For rifle the guidance I was given was long vision prescription standard, or plus +0.25 to +0.5 a diopter, I went with +0.5 and its working well.
Your long visions are -0.75 so +0.25 would result in a lens of -0.5. BUT best to go to an opticion who specialises in shooting, it will then be correct and right for you, its too specialised for guesswork.
There is some specialised guidance on the Knobloch site.
Charlotte
Posts: 60
Joined: Mon Oct 02, 2006 12:33 am
Location: Atlanta, GA

Post by Charlotte »

I went to Pearle Vision and told the optometrist what I wanted and he let me bring my rifle in. I sighted on the parking lot lines across the street (8 lanes + median + distance from the back of their store) while he placed lenses between my knoblochs and the rear iris and I wound up with the best prescription I've ever had for shooting. Pearle cut the lens and had it ready for me in 2 days because it was not a size and shape they were used to. I've been really happy with my new lens and my 100 yd scores showed immediate improvement.
westerngriz

Post by westerngriz »

well i think i might want to go to a different doctor who is more flexible with what he would do. and btw i have no idea what the prescription means.
Matt
justadude
Posts: 791
Joined: Thu Jul 22, 2010 11:32 am

Post by justadude »

@Charlotte

My eye doctor did similar for me, brought in air rifle and pistol and set up in a back room looking at a white wall. Emphasis was on focusing the front sight. Did your guy or gal set you up focused on front sight or a little further out? Just ordered one of Eric U's sight extension/tuner tubes and expect I might need to touch up the lens a bit.

@Westerngriz

The numbers usually refer to "diopters" which become the reciprocal of the focal length of the lens in meters. The +/- ends up being whether the focal point is in front of or behind the lens or concave/convex.

Now, the next part gets iffy, from what I am told the first number is your distance correction and the second number is what is added for you close number. Hence, if you were just buying readers you would likely get a -1.00. One eye is the right eye, sometimes referred to a D or dexter and the left is S or sinister but I am not sure if there is a standard order or people with the "tribal knowledge" just know these things.

Hope this helps,
'Dude
rbs
Posts: 189
Joined: Wed May 26, 2004 9:49 am

Correct Lense

Post by rbs »

I would suggest you contact Neal Stepp, http://www.iss-internationalshootersservice.com/, he is very knowledgable, helpful and offers by far and away the best price for optical lenses
mapletune
Posts: 58
Joined: Mon Mar 22, 2010 7:24 pm

Post by mapletune »

i just went to my optometrist today to get my prescription done... though I won't have them until Monday, let me share my experience.

Background, 1) I can't bring my rifle to the clinic, he can't come to the range 2) we don't have clip-on lens testing device.

Basically, I measured the distance from the rear sight to the fore sight, and brought them to the clinic.

We first tested for normal sight prescription and then we set up reading cards at about the distance of the sight line. I also set up the rear and fore sights at a distance same as sight line and would look through it against a bright and far background to confirm whether I could easily stay in focus on the fore sight.


Anyway, my results, just for reference:

Shooting prescription ended being about .75 stronger than normal and .50 less correction for astigmatism.

Just to show that optimal may not be quite normal~
Charlotte
Posts: 60
Joined: Mon Oct 02, 2006 12:33 am
Location: Atlanta, GA

Post by Charlotte »

Dude,
I was having vision problems at 100 yds. My sight picture at 50 yds/meters was OK but at times the target at 100 seemed to strobe.
I prefer having some compromise between the front sight and the target.
I can see my front sight quite well but my lens is not optomized for seeing my front sight. What actually happened was that I asked for perfect front sight vision and 100 yds was terrible. That's when I went back with my rifle and told the guy what I was seeing and that's when he pulled out the extra lenses.
On another website I was lucky enough to have a conversation with a shooter/eye doctor. Here is the link, but in post #4 he put a link to something he wrote that is of benefit to everyone who shoots and wears glasses.
http://forums.delphiforums.com/matchsho ... msg=3811.1
tsokasn
Posts: 299
Joined: Tue Sep 11, 2007 12:22 am
Location: Athens,Hellas

Post by tsokasn »

rbs
the site is not working...
rbs
Posts: 189
Joined: Wed May 26, 2004 9:49 am

I.S.S.

Post by rbs »

Charlotte
Posts: 60
Joined: Mon Oct 02, 2006 12:33 am
Location: Atlanta, GA

Post by Charlotte »

Here is the thing from that website I was trying to post.
Attachments
shooting glasses.pdf
Larry Hoffman wrote this
(23.25 KiB) Downloaded 322 times
Mesa
Posts: 27
Joined: Mon May 25, 2009 3:35 pm

Correct lenses

Post by Mesa »

Hey Matt, I go to two places, My regular optomitrist had me bring my rifle in and did the set up there( he was very interested in what we were doing) Kind of made the other patients raise their eyebrows though. and the other is I have two optomitrist next door and he did my set up in my garage. Really you need a shooter friendly optomitrist, sorry Matt no easy answer, especially since you live in the Liberal part of town. Phil
Guest

Correct lenses

Post by Guest »

Matt, Bob had an optomitrist that did all the junior work, just needed a perscription, and the price was reasonable.
Spencer
Posts: 1890
Joined: Fri Feb 24, 2006 9:13 pm
Location: Sydney, Australia
Contact:

Post by Spencer »

Make sure you take your shooting glasses with you for the examination - they can (i.e. usually) have a different distance for the posterior vertex (distance from the rear of the lens to the eye) from that of normal spectacles, and it makes a difference.
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