Aim: To assess the effect of peribulbar anaesthesia on the intraocular pressures of patients undergoing intraocular surgery and to compare the change in intraocular pressure in those that received ocular compression using a Honan’s intraocular pressure reducer with those that received no compression whatsoever. Materials and Methods: This study was a non randomized case control intervention study carried out on 100 eyes of 100 consecutive patients scheduled for elective cataract extraction in the Guiness Eye Centre, Lagos University Teaching Hospital (LUTH) and the St Mary’s Eye Hospital, Ago Iwoye between September 2012 and January 17th 2013. There were two groups of 50 eyes each. Each eye received 6 millilitres of 2% xylocaine mixed with 0.5% bupivacaine, 1:100,000 adrenaline and hyaluronidase for injection/infusion given by the same individual with 4 millilitres given in the inferotemporal region (the junction between the lateral one-third and medial two-thirds of the lower lid crease) and the remaining 2 millilitres given at the lacrimal caruncle. Group A received post-injection external ocular compression with the Honan’s intraocular pressure reducer (Honan’s Balloon) and Group B received no compression. Intraocular pressures were measured before, after and at intervals of 5 minutes until 20 minutes also by the same individual. The results were analyzed using the Statistical Package for Social Sciences version 17 (SPSS 17). Pearson’s Chi square test was used to compare proportions and comparison of mean intraocular pressures was done using the independent t test. The results were statistically significant if p was less than 0.05.