The IOP spikes in group C were higher than those observed in groups A and B : at T2 , they were observed in 40 % of the patients in group A , 30 % in group B , and 76 % in group C ; and at T3 , in respectively 20 % , 10 % , and 68 % ; and at T4 , in respectively 4 % , 0 % , and 28 % .