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