The more peripheral vision there is, the more difficult it is for one eye to suppress the other. The reason is, the suppressed eye gets stimulated by the periphery, and is more likely to stop underfocusing and wake up. This seems to agree with my experience that the eyes tend to align better where the peripheral vision is stimulated, particularly outside with open sides filled with buildings, cars, people, and all kind of movement. As people come into the periphery of the suppressed eye and keep moving across the visual field, it has a natural tendency to start following and become more aligned, up to the point of suppressing the other eye. It can be viewed as two eyes competing with each other, but the one that is losing has its periphery way to the side that only this eye can see, but not the other. If something sufficiently unusual comes into this side of the visual field, it gets noticed and this eye gets more of the mind's attention. Conversely, when the vision is statically overfocused on a small area covered by both eyes, such as a cellphone screen, and there is little movement in the periphery, the suppressed eye is hopelessly losing to the other one.
When the suppressed eye is deviating far enough to the side, there is sometimes a feeling similar to what Bates described as eccentric fixation. That is, I may be able to see some object on the side better than what's in front of me. I guess, this can only happen if the deviating eye is strong enough, end if the deviation is outside, and not across the other eye. This is accompanied by a feeling of strain in the deviating eye, same as the usual feeling of strain accompanying eccetric fixation with both eyes. (This can be experienced even if both eyes are looking at different things, fixation can be away from both centers.) I tried palming just the deviating eye, but for the palming to work I have to center it to see black, and this often makes the open eye deviate, and shifts the mental focus from whatever the other eye was seeing to seeing black. Otherwise, I indeed cannot see much black by just closing the deviating eye, if it stays deviated when closed. It feels underfocused and difficult to access. However, I think this asymmetric palming may be useful with sufficient experience.
When the suppressed eye is deviating far enough to the side, there is sometimes a feeling similar to what Bates described as eccentric fixation. That is, I may be able to see some object on the side better than what's in front of me. I guess, this can only happen if the deviating eye is strong enough, end if the deviation is outside, and not across the other eye. This is accompanied by a feeling of strain in the deviating eye, same as the usual feeling of strain accompanying eccetric fixation with both eyes. (This can be experienced even if both eyes are looking at different things, fixation can be away from both centers.) I tried palming just the deviating eye, but for the palming to work I have to center it to see black, and this often makes the open eye deviate, and shifts the mental focus from whatever the other eye was seeing to seeing black. Otherwise, I indeed cannot see much black by just closing the deviating eye, if it stays deviated when closed. It feels underfocused and difficult to access. However, I think this asymmetric palming may be useful with sufficient experience.
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