Aktas Z, et al. - Researchers conducted this retrospective study to assess the surgical success rate and applicability of circumferential trabeculotomy vs converted traditional trabeculotomy in patients with neonatal-onset primary congenital glaucoma (PCG) in Turkey. The sample consisted of 42 patients (42 eyes) with an average age of 34.0 ± 6.7 (14 to 59) days at the time of the surgery, who had 5/0 prolene suture-assisted circumferential trabeculotomy or rigid probe-assisted traditional trabeculotomy for the treatment of neonatal-onset PCG. Seventeen eyes underwent circumferential trabeculotomy and 25 eyes underwent traditional trabeculotomy with a failure in completing circumferential trabeculotomy. Data reported that the applicability rate of circumferential trabeculotomy was 40.4%. Traditional trabeculotomy surgical success rates in the first, second, and third year of follow-up were 60%, 48%, and 44 %, respectively. Circumferential trabeculotomy for the treatment of neonatal-onset PCG seems a safer and more successful procedure than traditional trabeculotomy. In contrast to the traditional procedure, the circumferential trabeculotomy intraocular pressure-lowering effect could be maintained for up to ~36 months.