Evaluation Of Intraocular Pressure And Anterior Chamber Parameters Before And After Pharmacologic Pupil Dilatation In Patients Planned For Cataract Surgery
Published 2023 - 41st Congress of the ESCRS
Reference: PO0500 | Type: Free paper | DOI: 10.82333/a7v5-1y09
Authors: Yaşar Dağ* 1 , yakup acet 2
1ophtalmology,Başakşehir Çam ve Sakura Şehir Hastanesi,istanbul,Türkiye, 2ophtalmology,Mardin Eğitim ve Araştırma Hastanesi ,mardin,Türkiye
Purpose
Observing the changes in pupil dilatation on intraocular pressure and anterior chamber parameters in patients planned for cataract surgery and taking necessary precautions by considering these changes.
Setting
Başakşehir Çam and Sakura City Hospital Eye Clinic, İstanbul
Methods
The study was designed as a Prospective Case series. Seventy-six patients were included in the study. Intraocular pressures of patients who were planned for cataract surgery were measured with applanation tonometry, and anterior chamber parameters were measured with Scheimpflug Topography Device, before and after pupil dilatation. Patients with previous ocular surgery, glaucoma patients, corneal disorders, iris irregularity, insufficiently enlarged pupils, and patients not compatible with the device were excluded from the study.
Results
Intraocular pressure decreased significantly after dilation (16.6±3.1) compared to pre-dilation (18.1±3.4). (p=0.000) The iridocorneal angle increased significantly after dilation (47.0±7.8) compared to pre-dilation (39.8±7.7). (p=0.000) Lens rise showed a significant increase after dilatation (0.20±0.63) compared to before dilation (-0.03±0.66). (p=0.000) The anterior chamber depth increased significantly after dilation (3.30 ± 0.44) compared to before dilation (3.22 ± 0.43). (p=0.000) A significant positive correlation was observed between intraocular pressure and iridocorneal angle in the amount of change before and after dilation. (p=0.003)
Conclusions
There is no increase in İntraocular pressure after dilation in patients scheduled for cataract surgery. A significant decrease in intraocular pressure was detected after pupillary dilatation. The iridocorneal angle widens due to the retraction of the iris-lens plane. This may explain the intraocular pressure drop.
In our study, high İntraocular pressure due to angle closure was not found in any of the patients. Sirius Topography Device can be used as a non-invasive and practical method for the evaluation of anterior chamber parameters. Anterior Chamber Depth, Lens Rise, Pakimetri, and Corneal Volume measurements are compatible with the literature and give reliable results.