Jyotiranjan Mallick 1 , Lily Devi 2 , Pradeep Kumar Malik
: A prospective study was carried out. 1. To find out the correlation between the baseline pulse pressure and baseline intraocular pressure. 2. To find out correlation between duration of ocular compression and intraocular pressure lowering effect with ocular compression by balanced weight. 3. To find out any correlation between baseline pulse pressure and intraocular pressure lowering effect with ocular compression by balanced weight. METHODS MATERIALS: 100 randomly selected cases having uncomplicated cataract were divided in to 4 study groups of 25 cases each. The baseline intraocular pressure (IOP) and pulse pressure were noted. After giving peribulbar block with the same volume of injection they were subjected to a standard amount of ocular compression of 380 grams for a variable time duration of 5, 7, 10 and 12.5 minutes respectively. The intraocular pressure was noted again before and after the ocular compression. Statistical analysis was done by unpaired t test. RESULTS: Cases with pulse pressure range of 31-40 mm Hg, 41-50 mmHg and ≥51 mm Hg had mean baseline intraocular pressure 13.83(SD1.71) mm Hg, 14.83(SD2.00) mm Hg and 17.42(SD1.80) mm Hg respectively (P<0.001). The cases in study group A (5 minutes of ocular compression), B (7.5 minutes), C (10 minutes) and D (12.5 minutes) had mean IOP lowering equal to 6.18 (SD 0.66) mm Hg, 6.80 (SD 0.81) mm Hg, 7.70 (SD 0.56) mm Hg and 8.50 (SD 0.67) mm Hg respectively (P<0.001). unpaired t test was used for stastical analysis. CONCLUSIONS: 1. There is a tendency of increased level of baseline IOP in the cases with increased level of pulse pressure. 2. Increased duration of ocular compression increases the IOP lowering effect. 3. There exists no definite correlation between the baseline pulse pressure and the intraocular pressure lowering tendency for variable durations of ocular compression
