by jshuberg on Mon Nov 11, 2013 5:28 pm
First off, the term "dominant" eye isn't correct unless you actually have a seeing impairment in one of your eyes. A person who is right handed is right hand dominant because they use that hand more often, resulting in more synapses developed in the motor cortex of the brain for controlling that hand. A persons "weak" hand doesn't have the same dexterity or fine control as their dominant hand because fewer synapses are dedicated to controlling it.
However, you can feel sensory input from both hands equally. Your dominant hand is not more sensitive to touch than your weak hand. The same is true of your eyes. The brain prefers to favor one eye, and then stitch the image from the other eye with it to provide depth of vision. Just how both hands are able to feel the same level of touch (again, presuming no other impairments), your brain is perfectly capable of favoring either eye. One is not "dominant" in the same way as when using your hand to perform something that requires dexterity. Don't confuse sensory input from motor control.
This is evidenced when using the Bindon Aiming Concept, where a person can switch between magnification and no magnification when using an ACOG by switching between which eye the brain is favoring. It takes a little time to master but it's a very cool and powerful technique. If you are right handed, right eye far sighted, and left eye near sighted, this is actually a very cool thing for you, and you should leverage it in your shooting.
The ideal sight picture for greatest accuracy is when you are shooting with both eyes open, the point of binocular convergence is on the target, and the point of optical focus is on the front sight. If I understand you, when looking at something close, your left eye can focus on it properly, but it is still fuzzy with your right eye. This indicates that the point of optical focus for each eye is different. One is one the sight, the other somewhere forward of the front sight, closer to the target. This should result in the target being in sharper focus than when both eyes are focused on the front sight. You're going to want to develop one or more drills to train yourself to leverage this condition Try the following and see if it helps:
Run a plain white target with a 1/2" green dot on it out to 5 yards or so. Using a .22 pistol, adjust the sights so that point of impact is directly behind the center of the front sight. Use a rest if necessary. What you want to do is with both eyes open, use your left eye to focus on the sight. Use your right eye to see the target. Your brain will stitch the images together so that what you perceive will be a partially transparent front sight, with the 1/2" green dot directly behind it. Because the green dot is completely obscured by your front sight, you must use both eyes correctly in order to get a sight picture and hit the dot. You should see one target slightly out of focus, and two transparent front sights. The one in focus should be the one that is properly aligned with the rear, and the other one should be off to the side and can be ignored.
Play with this sight picture. You will discover that you can eventually shift between eyes, from seeing a solid sight that completely obscures the dot, to fading away to where you see the dot perfectly, and the sight all but disappears. With the different focal points of your eyes, you should be able to see the dot with greater clarity than most of us, which is a definite advantage. This will be especially true the further away the target is from the front sight. Many competitive shooters have glasses made with two different natural focal points for just this reason, so nature has given you an advantage that other people have to lean on specialized equipment to achieve.
Anyways, I hope this makes sense, and helps you out. If you want to hit the range some time and try out some different sight picture training techniques, hit me up.
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