2Uz. Dr., Sağlık Bilimleri Üniversitesi Ulucanlar Göz Eğitim ve Araştırma Hastanesi, Göz Hastalıkları, Ankara, Türkiye
3Asist. Dr., Sağlık Bilimleri Üniversitesi Ulucanlar Göz Eğitim ve Araştırma Hastanesi, Göz Hastalıkları, Ankara, Türkiye DOI : 10.37844/glauc.cat.2021.16.26 Purpose: To investigate the laser peripheral iridotomy (LPI) induced changes on corneal densitometry (CD) in cases with acute primary angle closure glaucoma (PACG) during the post-laser 1 month period.
Materials and Methods: This prospective study included 21 eyes 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 anti-glaucoma treatment and complete regression of corneal edema. Central corneal thickness (CCT) and CD values were measured by densitometry software of Pentacam HR-Scheimpflug corneal topography over a 12-mm diameter of the cornea just before and at the first week and first month after LPI.
Results: The mean age of 13 female and 8 male cases was 56.6±7.9 years. 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.
Conclusion: The corneal densitometry 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.
Keywords : Corneal densitometry, corneal edema, laser peripheral iridotomy, primary angle closure glaucoma