Ocular Anterior Segment Modifications in Patients with Suspected Primary Angular Closure Treated with Peripheral Iridotomy

Abstract

Objective: To determine modifications of ocular anterior segment measurements in patients with suspected primary angular closure treated with laser peripheral iridotomy.

Methods: A prospective longitudinal study was performed with 80 eyes of 40 patients with suspected primary angular closure. Visual psychophysical, clinical, demographic, gonioscopic and biometric variables were evaluated.

Results: The average age was 52 years; female sex was predominant. Preoperatively, 25% of patients reported intermittent blurred vision; after surgery, none reported blurred vision; 32.5% reported intermittent moderate ocular pain, decreasing postoperatively to 17.5%. Intraocular pressure was significantly reduced. Postoperatively, there was an increase in the opening of the camerular sinus. The volume of the anterior chamber showed a significant increase. There were no variations in anterior chamber depth and lens elevation. The iris-cornea angle increased by two degrees; there were better results in the nasal sector.

Conclusions: It is considered that peripheral iridotomy is still an effective procedure for suspected primary angular closure due to the modifications shown by the measurements of the ocular anterior segment, with the increase of the anterior chamber volume, increase of the camerular sinus amplitude and improvement of the ocular pressure.