Evaluation of anterior segment changes following laser peripheral iridotomy by Scheimpflug imaging

Session Details

Session Title: Presented Poster Session: Infection & Imaging

Venue: Poster Village: Pod 2

First Author: : A.Ghanem EGYPT

Co Author(s): :                           

Abstract Details

Purpose:

To assess the evaluate of LASER peripheral iridotomy on anterior segment parameters using the Scheimpflug imaging system in the management of angle closure glaucoma.

Setting:

Mansoura Ophthalmic Center, Mansoura University, Egypt.

Methods:

This was a prospective, non-randomized, non-comparative, interventional study. Thirty one (31) eyes of 28 patients with primary angle closure (PAC) were enrolled from Glaucoma Clinic of Mansoura Ophthalmic Center. Patients had LASER peripheral iridotomy. Anterior chambers of the treated eyes were evaluated using Scheimpflug images measuring different parameters of anterior chamber and angles. Main outcome measures include evaluation of anterior chamber depth at different points (centeral & peripheral at 4 mm & 8 mm from center) and anterior chamber angle at 4 quadrants. Data were collected in a master sheet, coded, entered and analyzed using EPI-INFO.

Results:

Mean Angular width had an average in degrees as following; superior mean angular width at 0º (22.99º), at 90º (23.01º), at 180º (23.94º), and at 270º was 23.12º before LPI. After LPI they increased to 25.8º, 25.9º, 26.24º, and 25.9º respectively. Mean pre LPI IOP was 19.48mmHg with 9 out of 31 eyes on topical medication whereas following LPI, mean  IOP  was  16.31 (±2.97 mmHg). LPI significantly increased PACD immediately and on intervals post iridotomy  Significant PACD deepening and widening of ACA were observed with negligible change in CACD.

Conclusions:

PACS patients had more significant change in PACD at both 4 mm and 8 mm circles and ACA at all quadrants in comparison to both PAC and ACG patients. Scheimpflug imaging system can evaluate PACD and ACA non-invasively and all parameters of the anterior ocular segment automatically.

Financial Disclosure:

None