Posted: 7/1/2009 5:27:09 AM EDT
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I have astigmatisim and halos around point sources of light too. Glasses and contacts can never fully correct for it.
Sucks. 
Wavefront-adaptive "custom" LASIK from a clinic that also uses the Intralase laser to cut the corneal flap perfectly with better healing and precision might get rid of that. The only thing that will help you with that is to use the lowest intensity possible, the dimmer the recticle, the less it will bloom in your eyes. I'd say to try a different color, like a dot optic that uses green, but IIRC, chromatic abberation probably means that red actually bleeds the least, and the blue/violet end of the spectrum bleeds the most. Just like how the rainbow/spectrum spreads out from a prisim or other lenses. However, human color sensitivity peaks at green, and the same exact lumen output of green looks about 20x brighter than red does to the human eye. (Just compare a 5mw green laser with a 5mw red one if you don't believe me. So I have a Bushnell dot with selectable green and red recticles, this model: Bushnell Trophy 73-0135 What I can get away with is using the green recticle on a very low intensity setting, so while green blooms wider than red, I can over-compensate by using green on the dimmest setting, meaning it does not bloom at all. However, the dim green dot will be lost in green vegetation instantly. The red has much better contrast over most everythig. But the green works well for punching paper, or maybe if you live/shoot in a dry/desert climate . |
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i just had my eyes checked after i broke my glasses.
-1.0 & -1.5 i wouldn't exactly call that blind. i don't even wear glasses except to drive and only then because the state says i have to. ETA: so i'll be damned if i'm going to buy an optic that won't "work" if i don't have 20/10 vision..................... |
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I'm right there with you. It's not as bad when I view it outside, but inside it's a pure blur. The Aimpoint single dot is definitely more tolerable. |
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Quoted:
i just had my eyes checked after i broke my glasses. -1.0 & -1.5 i wouldn't exactly call that blind. i don't even wear glasses except to drive and only then because the state says i have to. ETA: so i'll be damned if i'm going to buy an optic that won't "work" if i don't have 20/10 vision..................... the 20/20 system of vision measurment is an incredibly crude way of stating visual acuity. It dates back to the Civil War, IIRC. There are a whole bunch of optical paramaters that you can try to correct for, just like how binoculars and rifle optics have all sorts of adjustments. You can have 20/20 focus, or even 20/8, the thereoretical perfection, but still have a host of other optical defects such as astigmatisim. Also, pinpoint sources of light halo worse for me in the dark, so I think that when my pupils are diallated it's messing up the focus that way. |
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In my experience, if I look through any type of "red dot/red cross hairs" scope without my prescription glasses
I get what you are talking about. What I've read hear on Arfcom if I'm not mistaken, is that the dot in the scope is the same as if you were looking at your target at what ever distance. How can a dot that is 8" from your eyes look so fuzzy? I have no idea but if I wear my glasses it isn't. If I use a magnified scope then my glasses are a detriment. GM |