In all cases, {TAIL ~ the difference} of visual sharpness between {HEAD ~ the two eyes} is sufficiently reduced, from 5% to 10%, to maintain the function of visual binocularity 
In all cases , { TAIL ~ the difference } of visual sharpness between { HEAD ~ the two eyes } is sufficiently reduced , from 5 % to 10 % , to maintain the function of visual binocularity
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH