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JBrooks

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Discussion starter · #1 ·
As some of you are aware I have been learning about the relatively new field of Sports Vision and have been offering eye tracking assessments at selected shoots. Our eyes are meant to work as a team when we look at objects that are either moving or fixed. To do that they need to be able to coordinate their individual focus on an object. This coordination is provided by the eye muscles that control the movement of each eye. This is different than vision acuity which has to do with how clearly you see. Vision acuity is corrected by glasses, contacts, or laser surgery. If the eye muscles for each eye are not working to precisely focus each eye on an object, this can often be corrected by specific eye exercises to strengthen and coordinate the muscles of the eyes.

Below are couple of GIFs showing in real-time, two RightEye Vision System assessments of what are called Saccades, the ability of the eyes to move focus accurately and quickly between two objects. The first GIF is an unimpaired person whose eyes are performing at a high level. You will note the smoothness and accuracy as each eye takes the shortest route and terminates in the center of the target. This person is getting accurate data as to the target's location in space. The second GIF shows a person with some tracking impairment in the right eye but with a significant impairment in the left eye. As you can imagine, if the impaired person was shooting with both eyes open, the brain would be getting two very divergent data feeds that would confuse the brain as to the targets location in space.

By example, shooting a rising trap target requires we get from a fixed gaze position to on the rising target. Fortunately, impairments like below can be corrected though eye exercises or even the addition of a prism in a prescription lens. If you think you may have eye tracking issues, then a visit to a vision therapist or sport vision trainer may be a step to better scores.

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Discussion starter · #3 · (Edited)
How does this work for cross firing?
The classic definition of cross firing is when the off shoulder eye takes over the tracking of the target which causes a misalignment of the sightline to the target and the bore line of the barrel resulting in a miss if the angle of the target is sufficient to place POA outside the effective shot pattern.

Unequal data feeds due to lack of coordination of the eyes can result in the brain being unable to accurately locate the target in space which results in a miscalculation of the target's speed and trajectory preventing the brain from correctly calculating the lead required and mis-timing the trigger pull. If this miscalculation places the target outside the effective pattern, it will result in a miss. Again, the harder the angle of the target, the greater the chance for a missed target.

So, while not a classic cross fire, the result can be the same without the eyes switching dominance.
 
Thanks for posting this, JBrooks! I've looked at a lot of graphs of Saccades and smooth pursuit online, but these GIFs put it very succinctly. Learning how the eye works in acquiring and tracking targets and how to use that most effectively can really help in picking up birds faster. I'd be interested in research into how one tracks doubles. (Yes, I know, we all do it differently......)
 
Discussion starter · #6 ·
Thanks for posting this, JBrooks! I've looked at a lot of graphs of Saccades and smooth pursuit online, but these GIFs put it very succinctly. Learning how the eye works in acquiring and tracking targets and how to use that most effectively can really help in picking up birds faster. I'd be interested in research into how one tracks doubles. (Yes, I know, we all do it differently......)
I'll post up some horizontal GIFs tomorrow with some comments.
 
Discussion starter · #7 ·
what is "addition of a prism in a prescription lens"? How does that work? Can a regular eye doctor prescribe this?
A prism bends light. By putting one in your glasses it can bend what the misaligned eye sees to make it the same as the other eye. I think most optometrists are capable but one equipped with a RightEye system perhaps has more exposure to patients needing that type of correction. They can be found on RightEye.com by clicking on "Find a Provider" up in the top right hand corner.
 
Discussion starter · #10 ·
Below are GIFs of RightEye Assessments presenting good and bad Horizontal Saccades. What the Saccades GIFs don't show but what the reports do is the speed which is important in getting from one target to the other. Obviously, the first one shows a lot of latency in beginning the movement and really bad accuracy in fixating once the target is reached. The second is an unimpaired person. Which do you think would be the more likely better doubles shooter? If the eyes can't provide the brain stable data feeds, it makes it difficult for the brain to determine speed and trajectory.


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Discussion starter · #12 ·
so what or how does pigment dispersion syndrom come through.

I believe that that condition would fall under visual acuity(how clearly we see things) concerns rather than eye tracking which is concerned with the mechanical function of the eyes as in coordinated movement, smoothness of movement and stability of gaze.
 
Floaters are my biggest problem. But, I'm not going through the process to remove them. I just put up with them!
 
Floaters are my biggest problem. But, I'm not going through the process to remove them. I just put up with them!
I've had floaters for around 15 years or so. I've found that over time I no longer see them, so I guess my mind has sort of erased them.

The only time I see them is if I'm in the pool doing the backstroke and I think about them. Then I see them against the sky. Same sort of thing happens with my tinnitus. If I think about it, I hear it. If I don't think about it, I don't hear it.
 
so what or how does pigment dispersion syndrom come through.
Here's what the AAO has to say about it:

 
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