The Relationship Between Serous Choroidal Detachment And Ahmad Glaucoma Valve Failure; A Coarsened Exact Matched Study
Published 2023 - 41st Congress of the ESCRS
Reference: PO0878 | DOI: 10.82333/7pr1-6g60
Authors: Nader Nassiri* 1 , Maryam Yadgari 2 , Kourosh Sheibani 3 , Sara Kavousnezhad 4
1Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences,Tehran,Iran, Islamic Republic Of, 2Ophthalmology,Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences,Tehran,Iran, Islamic Republic Of, 3Basir Eye Health Research Center,Tehran,Iran, Islamic Republic Of, 4Vanak Eye Surgery Center,Tehran,Iran, Islamic Republic Of
To investigate the effect of choroidal detachment (CD) on the success of Ahmad Glaucoma Valve (AGV) implantation.
Rassoul Akram Hospital, Tehran, Iran.
In this case-control study patients who underwent AGV implantation and developed choroidal detachment (CD)
were included as the case group. A control group matched for age, sex, baseline intraocular pressure (IOP), and the
number of previous glaucoma surgeries using coarsened exact matching was also included. The patients’ data including
IOP, number of glaucoma medications, and complications were retrospectively extracted from the patients’ records. The
primary outcome was the AGV success rate defined using two definitions; 5< IOP < 18 and a 20 percent reduction from
the baseline and 5 < IOP < 15 and a 30 percent reduction from the baseline. IOP and Glaucoma medications were
considered as secondary outcomes.
Seventeen patients as the case group and 38 matched individuals as controls were included. The patients in the
case group showed higher IOP in all time intervals. However, the average IOP reached a statistically significant
difference only at month 3. (17.94 ± 6.78 vs. 13.39 ± 3.09, P= 0.003). Using the first definition, the mean duration of
survival was significantly shorter in patients with CD (10.4 ± 0.7 months vs. 11.7 ± 0.2 for controls LogRANK= 4.1, P=
0.04). Among all patients, the cumulative probability of success was 98.2% and 89.1%, and 89.1% in months 3, 6 and 12
respectively, with the first definition. The corresponding value for the second definition was 81.8 %, 69.1 %, and 65.5 % in
months 3, 6, and 12, respectively.
Choroidal detachment after AGV implantation could be a risk factor for failure after 12 months. The patients
experiencing CD in the postoperative period had significantly lower survival duration. A larger, prospective study with a
longer follow-up duration is suggested to further confirm the results of the present study.