Official ESCRS | European Society of Cataract & Refractive Surgeons


Laser peripheral iridotomy-induced changes in corneal densitometry in acute primary angle-closure glaucoma cases

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Session Details

Session Title: Presented Poster Session: Glaucoma II

Venue: Poster Village: Pod 3

First Author: : U.Elgin TURKEY

Co Author(s): :    E. Sen   O. Budakoglu   D. Yildirim   N. Yesilyaprak              

Abstract Details


Our purpose was to investigate the laser peripheral iridotomy (LPI) induced changes in corneal densitometry in acute primary angle closure glaucoma (PACG) cases during the post-laser 1 month period.


This prospective study included 21 eyes of 21 cases with first acute attack of PACG.


All the eyes underwent LPI with neodymium: yttrium-aluminum-garnet (Nd: YAG) laser after the intraocular pressure (IOP) decreased to normal levels with maximal systemic and topical anti-glaucoma treatment and complete regression of clinically significant corneal edema. Central corneal thickness (CCT) and corneal density values were measured by densitometry software of Pentacam HR-Scheimpflug corneal topography over a 12-mm diameter of the cornea just before LPI and at the first week and the first month after LPI. Kolmogorov smirnov and paired-t tests were used for statistical analysis.


The mean age of 13 female and 8 male cases was 56,6±7,9. The IOP during the acute attack was 47,5±4,2 mmHg and it decreased to 19,0±2,8 mmHg after medical treatment before LPI. Both the IOP and the CCT values decreased significantly values at the first week and month after LPI (p<0,001). Anterior, central, posterior and total corneal density values of at 0-2 mm zone, 2-6 mm zone, 6-10 mm zone and corneal density values of total zones decreased significantly at the first week and month after LPI.


The corneal density values were found to be decreased after LPI in acute PACG during the first month and this result was thought to be caused by the decrease in IOP and the regression of corneal edema due to LPI.

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