After Bonferroni correction ( p < or = 0.0056 , alpha/9 ) statistical significance was recorded only in the following retrobulbar hemodynamic parameters ; DCT ( 29.8 + / - 6.2 vs. 15.5 + / - 5.0 ) , GAT ( 33.8 + / - 9.0 vs. 15.0 + / - 6.6 ) and OPA measurements ( 4.3 + / - 1.0 vs. 3.0 + / - 1.6 ) , as compared to the baseline .