The Effect Of Gonioscopy Assisted Transluminal Trabeculotomy On Diurnal Intraocular Pressure
Published 2024 - 42nd Congress of the ESCRS
Reference: FP23.07 | Type: Free paper | DOI: 10.82333/cb3k-ex87
Authors: Anat May Tal* 1 , Nimrod Dar 1 , Fida El Zhalka 1 , Avner Belkin 1
1meir medical center,kfar saba,Israel
Purpose
Diurnal intraocular pressure (IOP) fluctuation is a known important risk factor for glaucoma progression. This study investigated whether gonioscopy-assisted transluminal trabeculotomy (GATT) reduces IOP fluctuation.
Setting
Meir Medical Center, Israel
Methods
Patients with ocular hypertension (OHT) or mild to moderate open angle glaucoma were recruited for the study. Twelve-hour diurnal IOP curves were measured preoperatively and 3 months after surgery. All patients had undergone a 1-month medication washout prior to the IOP measurements. Mean, standard deviation (SD), peak, range and supine IOP measurements between before and after GATT were compared.
Results
Sixteen patients, at a mean age of 70 years were eligible for this study and had both pre- and postoperative IOP measurements. After GATT, mean washed-out IOP decreased from 20.6 ± 3.9 to 12.9 ± 4.1 mmHg (p<0.001), and peak IOP from 23.9 ± 4.7 to 15.3 ± 4.5 mmHg (p<0.001). Postoperative IOP SD was reduced in 10 (62.5%) patients, unchanged in 1 (6.25%) and increased in 5 (31.25%) patients. High preoperative SD and range were significantly associated with decreased SD after surgery.
Conclusions
GATT reduces mean IOP and diurnal fluctuation in patients with OHT and mild to moderate glaucoma. High preoperative diurnal fluctuation is associated with its reduction after GATT.