incomplete posterior vitreous detachment without collapse of the vitreous gel occurred significantly more frequently in eyes with preoperative proliferative vitreoretinopathy , grade b ( 68.4 % , than in eyes with preoperative proliferative vitreoretinopathy , grade o-a ( 27.5 % ; p = 0.02 ) .
C0042907
vitreous detachment
C0015392
eyes