in a series of 112 consecutive patients who underwent vitrectomy because of severe penetrating ocular trauma , good visual recovery ( 6/12 [ 20/40 ] or better ) was achieved in 15 of 23 patients ( 65 % ) who underwent surgery within 72 hours of the injury ( group 1 ) , in seven of 14 patients ( 50 % ) who underwent surgery three to ten days after injury ( group 2 ) , in eight of 22 patients ( 36 % ) who underwent surgery ten to 14 days after injury ( group 3 ) , in two of five patients ( 40 % ) who underwent surgery 14 to 30 days after injury ( group 4a ) , and in 17 of 48 patients ( 35 % ) who underwent surgery more than 40 days after injury ( group 4b ) .
C0042903
vitrectomy
C0015392
ocular