Table 1.

Demographics and preoperative characteristics (n = 125)

Mean ± SD (unless noted otherwise)	Combined iStent inject + Phaco (81 eyes)	Standalone iStent inject (44 eyes)
Age (years)	72.7 ± 7.5	71.3 ± 10.5
Range (years)	54–86	40–88
Gender	56% male/44% female	52% male/48% female
Cup:disc ratio	0.74 ± 0.17	0.78 ± 0.18
VF MD	− 6.6 ± 2.8 dB	− 7.0 ± 3.5 dB
Retinal nerve fiber layer thickness (µm)	81.4 ± 12.3	82.1 ± 13.6
Race/ethnicity	100% non-Hispanic white	100% non-Hispanic white
Eyes with prior glaucoma procedures (%)	26 (32%)	22 (50%)
Prior glaucoma procedures	31 procedures in 26 eyes	35 procedures in 22 eyes
Trabeculectomy	12	13
CPC	10	14
ALT/SLT	5	3
Laser iridotomy	2	2
Surgical iridectomy	1	0
Single first-gen iStent	0	1
XEN implantation	1	2
Type of glaucoma	n (%)	n (%)
POAG	60 (74%)	38 (86%)
PXG	15 (19%)	4 (9%)
Combined-Mechanism	4 (5%)	1 (2%)
Pigmentary	1 (1%)	0 (0%)
Secondary (neovascular/CRVO)	1 (1%)	1 (2%)
Mean medicated IOP	22.6 ± 6.2 mmHg	25.3 ± 6.0 mmHg
Mean # medications	2.52 ± 1.06	2.98 ± 0.88
Medicated IOP (mmHg)	n (%)	n (%)
≤ 15 mmHg	1 (1%)	1 (2%)
≤ 18 mmHg	22 (27%)	4 (9%)
Medication burden	n (%)	n (%)
Eyes med-free	1 (1%)	0 (0%)
Eyes on 3–5 preop meds	44 (54%)	33 (75%)

IOP intraocular pressure, SD standard deviation, C:D cup:disc, VF MD visual field mean deviation, Preop preoperative, POAG primary open-angle glaucoma, PXG pseudoexfoliative glaucoma, CRVO central retinal vein occlusion, CPC cyclophotocoagulation, ALT argon laser trabeculoplasty, SLT selective laser trabeculoplasty; Med medication, Preop preoperative, Phaco phacoemulsification