Forming {HEAD ~ these distal end surfaces} with {TAIL ~ this oblique angle} gives the illuminator distal end a leading edge that is much more easily inserted into an eye incision and significantly simplifies the task of inserting a microsurgical illuminator into an eye incision provided for the illuminator 
with
Forming { HEAD ~ these distal end surfaces } with { TAIL ~ this oblique angle } gives the illuminator distal end a leading edge that is much more easily inserted into an eye incision and significantly simplifies the task of inserting a microsurgical illuminator into an eye incision provided for the illuminator
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH