Clinical Efficacy And Impact On Ocular Aberrations Of Gonioscopy-Assisted Transluminal Trabeculotomy (Gatt): A Short-Term Analysis
Published 2026 - 44th Congress of the ESCRS
Reference: PP04.04 | Type: Free paper | DOI: 10.82333/apk0-6x28
Authors: Dr Basak Saracoglu Yilmaz* 1 , Dr Ibrahim Menzek 1 , Dr Gulsah Gumus Akgun 1
1Ophthalmology,Beyoglu Eye Training and Research Hospital,Istanbul,Türkiye
Purpose
To evaluate the changes in intraocular pressure (IOP), visual quality, and ocular/corneal higher-order aberrations (HOAs) following Gonioscopy-Assisted Transluminal Trabeculotomy (GATT) surgery in patients with open-angle glaucoma.
Setting
Retrospective study at a tertiary referral center in Türkiye.
Methods
Sixteen eyes of 16 patients who had undergone GATT surgery were included in this retrospective study. IOP, best-corrected visual acuity (BCVA), spherical equivalent (SE), and aberrations were measured and compare preop and postop month1. Ocular, corneal, and internal aberrations (coma, trefoil, spherical, and total HOT) were measured via i-Trace wavefront analyzer.
Results
The mean IOP was 27.19±10.35 mmHg , and the mean number of glaucoma medications was 2.5 ±0.63 at baseline. They significantly decreased to 14.31±3.47 mmHg and 0.94±1.12 at month1 (p<0.05). The mean SE was -1.59±2.32 D, and the mean BCVA was 0.46±0.54 (Decimal, Snellen) at baseline. At month1, the mean SE was -1.76±2.38 D, and the mean BCVA was 0.62±0.80. There was no significant changes in SE and BCVA at month1. (p > 0.05). There were no significant changes in total, internal and corneal coma, trefoil, spherical and HOT aberrations (p>0.05 for all).
Conclusions
Our preliminary results suggest that GATT is a promising procedure with a neutral effect on ocular aberrations in the short term. The study demonstrated effective IOP reduction and medication decrease while maintaining optical and refractive stability in this small patient cohort.