Mean Preoperative IOP Values

The mean preoperative IOP of the control group II was 7.8 (range: 7.0-9.0) mm Hg. In study group I and II it was 8.4 (range: 8.0-10.0) mm Hg and 7.8 (range: 7.0-9.0) mm Hg respectively. There was a reduction of the mean IOP postoperatively in both study groups compared to the mean preoperative values which was marked in the first day postoperatively. Gradual increase of the mean postoperative IOP was documented however at the end of three weeks, the mean percentage of reduction of IOP in the two study groups were ＞20.0 % without anti-glaucoma medications. The mean percentage of reduction was 35.0% in the study group I with only one eye (14.3%) had 12.5% reduction (success rate 85.8%). The mean percentage of reduction was 28.0 % in the study …show more content…
Figure 2 represented the mean preoperative and postoperative IOP values along the period of follow up in the study groups I and II compared to the control group II. The preoperative ratios (right/left) ranged from 0.87 to 1.28. The mean postoperative ratio reduced after surgery maximally within the second week of follow up and increased again at the end of follow up. The mean ratio at end of follow up was 0.79 (range: 0.7-1.0) in study group I and 0.84 (range: 0.6-1.0) in study group II. There was a highly statistically significant difference between the study group I and study group II as regards the mean right/left ratios started from day 5 postoperatively till the end of follow up periods (P-values were 0.004, 0.0005, 0.000001 and 0.0001 for days 5, 7, 14 and 21 respectively). Figure 3 demonstrated the pattern of these ratios along the period of follow up in both study