To reduce vascularisation before surgery through the application of topical vasoconstrictors, decreases the rate of intraoperative bleeding, improves the dynamics of the surgery and reduces the difficulty in surgical performance.
Only patients with primary pterygium were included in the study. A prospective randomized clinical trial was designed to compare intraoperative bleeding, need for cauterization and surgical time a group that was administered phenylephrine. preoperatively and one which did not receive it. The sample was divided into two groups: 1st (n = 27) received topical phenylephrine (F) 0.1 ml (10%), twice in 5 minutes before surgery. 2nd (n = 30) did not receive phenylephrine (NoF). The technique was similar in both groups using conjunctival autograft suturing. In both groups, the subconjunctival aneasthesia was performed with 0.5%bupivacaine hydrochloride with epinephrine 1:200,000.
A total of 57 patients were included in the study. The mean operation time for group F was 15.57 minutes (SD: 1.8 min) and the NoF group 16.51 min (SD to 1.82 min,
The use of topical vasconstrictors prior to pterygium surgery reduces the rate of bleeding and the time of surgery.