It is {HEAD ~ a combination} of bi polar magnets and {TAIL ~ eyeglasses} in which circular magnets are mounted concentrically into the rims of eyeglasses and so placed immediately in front of the eyes for an optimum therapeutic effect 
of
It is { HEAD ~ a combination } of bi polar magnets and { TAIL ~ eyeglasses } in which circular magnets are mounted concentrically into the rims of eyeglasses and so placed immediately in front of the eyes for an optimum therapeutic effect
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH