Official ESCRS | European Society of Cataract & Refractive Surgeons
Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


escrs app advert


Search Title by author or title

Endothelial changes, corneal thickness, and anterior chamber flare following Nd:YAG laser iridotomy

Poster Details

First Author: S.Khochtali TUNISIA

Co Author(s):    S. Sayadi   I. Ksiaa   M. Khairallah   S. Zaouali   B. Jelliti   M. Khairallah     

Abstract Details


To study corneal endothelium changes, corneal thickness and anterior chamber flare following Nd: Yag laser iridotomy.


Department of Ophthalmology, Fattouma Bourguiba University Hospital, Monastir, Tunisia


A prospective study including 20 patients (31 eyes) that underwent Nd: Yag laser peripheral iridotomy in a single session. All patients had a complete ophthalmological examination, a laser flare photometry and a noncontact specular microscopy at enrollment and at 1 day, 1 week, 1 month, 3 months and 6 months following the Nd: Yag iridotomy. The patients received topical dexamethasone (4 times a day) and timolol drops (2 times a day) for 7 days.


The mean energy used was 5.4 +/- 1.3 mJ. The mean total energy was 389.3+/-255.5 mJ. Intraocular pressure significantly increased at day1 (p=0.01). Anterior chamber flare significantly increased at day 1 (p=0.003) and at 1 month (p=0.004). Endothelial cell density (ECD), coefficient of variance and percentage hexagonality showed no significant changes during follow-up. Central corneal thickness significantly increased at day 1 (p<10-3). ECD at 6 months was negatively correlated with the total energy (p<10-3). ECD at 6 months was significantly lower in the eyes which received a total energy ≥ 280 mJ (versus< 280 mJ, p=0.02).


Nd: Yag laser iridotomy results in a transient elevation of anterior chamber flare, and intraocular pressure. It does not seem to induce a significant endothelial cell loss at 6 months. However, higher total energies may lead to more severe insult to the corneal endothelium.

Financial Disclosure:


Back to Poster listing