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Hi Eugene
Sorry to hear of your troubles with the binocular.
I’ve looked through several binoculars, from budget to top of the range and although the quality of the image changed dramatically from the low end to the top end, my eyes were always comfortable and relaxed when the bino’s were nicely collimated.
At face value, it seems your binocular is probably not collimated, so your eyes/brain are struggling trying to make sense of the poor image and I suspect this will certainly make you feel quite uncomfortable.
Optical defects such as chromatic aberration or coma at the edges would produce an image that is poor quality, but if the binocular is collimated, your eyes should still feel relaxed.
I would certainly take Eric up on his offer!
Cheers
Dennis
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