providing an effective amount of a photosensitive agent to the vessels and thereafter activating said agent in said vessels with {HEAD ~ a low energy light} sufficient to damage {TAIL ~ said vessels}, and 
sufficient to damage
providing an effective amount of a photosensitive agent to the vessels and thereafter activating said agent in said vessels with { HEAD ~ a low energy light } sufficient to damage { TAIL ~ said vessels } , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH