Components Iatrogenic break   Raised IOP  
  OR (95% CI) p value OR (95% CI) p value
20G vs 23G 5.9   (1.4-25.1) 0.017 0.8 (0.1-7.3) 0.868
Preoperative Bevazicumab 0.9   (0.3-3.1) 0.847 2.2 (0.7-6.8) 0.184
Intraoperative Triamcinolone 1.8   (0.6-5.3) 0.284 1.5 (0.5-4.8) 0.506
Intraoperative trypan blue 2.5   (0.6-11.0) 0.226 0.8 (0.1-5.3) 0.774
Intraoperative silicone oil 9.4   (2.7-32.3) <0.001 4.6 (1.2-17.9) 0.028
Intraoperative silicone oil* 10.0 (2.8-35.9) <0.001 3.7 (1.1-13.1) 0.042
IOP: Intraocular pressure; G: gauge; PPV: pars planavitrectomy *Multivariate analyses adjusted for all variables in the above table, with level of significance at p<0.05.
Table 6: The preoperative and intraoperative surgical factors related to intraoperative iatrogenic breaks and postoperative raised intraocular pressure (IOP) for pars planavitrectomy.