In close binocular vision, there is {HEAD ~ a superimposition} of {TAIL ~ two images} which are combined by the brain, similarly as for distance vision 
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In close binocular vision , there is { HEAD ~ a superimposition } of { TAIL ~ two images } which are combined by the brain , similarly as for distance vision
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH