However, the inventive method of treating {HEAD ~ patients} with {TAIL ~ both PDT and scatter threshold laser coagulation therapy} surprisingly either improved vision, or prevented further loss of vision 
with
However , the inventive method of treating { HEAD ~ patients } with { TAIL ~ both PDT and scatter threshold laser coagulation therapy } surprisingly either improved vision , or prevented further loss of vision
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH