Research Article

Ahmed Glaucoma Valves versus EX-PRESS Devices in Glaucoma Secondary to Silicone Oil Emulsification

Table 1

Baseline characteristics of the study patients.

CharacteristicAGVEX-PRESS value
Patients ()Patients ()

Age (years), mean ± SD (range)46.8 ± 13.5 (15–65)44.3 ± 17.4 (14–75)0.708
Gender, (%)
Male11 (78.6)7 (77.8)
Female3 (21.4)2 (22.2)
Indication for PPV, (%)
RRD11 (78.6)7 (77.8)
Giant retinal hole or multiple retinal holes4 (28.6)3 (33.3)
Macular hole caused by high myopia2 (14.3)2 (22.2)
Associated with choroidal detachment2 (14.3)1 (11.1)
PVR after failed PPV2 (14.3)2 (22.2)
Ocular injury3 (21.4)2 (22.2)
Penetrating injury3 (17.4)1 (11.1)
With endophthalmitis1 (8.7)1 (11.1)
With IOFB2 (14.3)0 (0)
Rupture0 (0)1 (11.1)
Tamponade duration (months), mean ± SD (range)11.3 ± 8.2 (3–31)10.0 ± 13.7 (3–46)0.153
Duration between removal of silicone oil and antiglaucoma surgery (months), mean ± SD (range)2.8 ± 1.6 (1–5)3.6 ± 1.6 (1–6)0.240
Axial length of the eye (mm), mean ± SD (range)25.5 ± 2.4 (23.3–30.7)26.9 ± 3.0 (24.2–31.1)0.208
Anterior chamber depth (mm), mean ± SD (range)3.1 ± 0.5 (2.3–3.8)3.0 ± 0.5 (2.1–3.5)0.801

AGV: Ahmed glaucoma valve; EX-PRESS: EX-PRESS glaucoma filtration device; SD: standard deviation; PPV: pars plana vitrectomy; RRD: rhegmatogenous retinal detachment; PVR: proliferative vitreoretinopathy; IOFB: intraocular foreign body.