RESUMO
The aim of this study is to compare Mydrane (combination of tropicamide 0.02%, phenylephrine 0.31% and lidocaine 1%) and mydriatic drops (tropicamide 1% and phenylephrine 10%) used for cataract surgery in terms of efficacy in pupil dilation and impact on corneal endothelial cell density (CD) and central corneal thickness (CCT). Prospective study including 64 eyes of 64 patients that underwent phacoemulsification with intraocular lens implantation. Patients were randomized into two groups: Mydrane group received: tropicamide and phenylephrine one day preoperatively and Mydrane during the surgery. Reference group received: tropicamide and phenylephrine preoperatively. Pupil size was measured only in Mydrane group, in the same eye of the same patient one day preoperatively after mydriatic drops were given and during the surgery, after intracameral Mydrane injection. CD and CCT were evaluated one day preoperatively and one month postoperatively in all patients and compared between Mydrane and reference groups. The results show CCT and CD significantly decreased after surgery in both groups. There is no difference in this decrease between groups. In Mydrane group there was no difference in dilated pupil diameter between Mydrane and mydriatic drops. Gender, diabetes mellitus, POAG, alpha-1 blocker treatment failed to affect pupil dilation obtained with Mydrane. Cataract surgery affects CCT and CD regardless of which mydriatic protocol had been used. Pupil diameter was similar after drops instillation and after Mydrane injection in all patients from the Mydrane group.