Table 3.
Top surgical preferences based on preoperative intraocular pressure and proportion preferring non-bleb-forming, hardware-free or conjunctival sparing procedures
| Pre-operative IOP (mm Hg)* | Most preferred procedure (N/total, %) |
Second most preferred procedure (N/total, %) |
Third most preferred procedure (N/total, %) |
Fourth most preferred procedure (N/total, %) |
Non-bleb-forming procedure N/total (%) |
Hardware-free procedure N/total (%) | Conjunctiva-sparing procedure (N/total, %) |
|---|---|---|---|---|---|---|---|
| >26 |
Xen gel stent* (63/289, 21.8%) |
Trabeculotomy, ab interno (54/289, 18.7%) |
Traditional trabeculectomy (41/289, 14.2%) |
iStent, 2 devices* (41/289, 14.2%) |
136/289 (47.1%) abc | 139/289 (48.1%) | 190/289 (65.7%)abc |
| 21–26 |
Trabeculotomy, ab interno (70/288, 24.3%) |
Xen gel stent* (49/288, 17.0%) |
iStent, 2 devices* (46/288, 16.0%) |
Traditional trabeculectomy (48/288, 16.7%) |
184/288 (63.9%)bc | 154/288 (53.5%) | 218/288 (75.7%)bc |
| <21 |
iStent, 2 devices* (54/288, 18.8%) |
Trabeculotomy, ab interno (52/288, 18.1%) |
Xen gel stent* (49/288, 17.0%) |
Traditional trabeculectomy (33/288, 11.5%) |
172/288 (59.7%)ac | 141/288 (49.0%) | 213/288 (74.0%)ac |
| P value* |
a 0.0027 b<0.0001 c 0.0001 |
>0.2 (for all comparisons) |
a 0.0369 b 0.0103 c 0.0179 |
*mm Hg (millimeters of mercury); iStent (Glaukos, San Clemente, CA, USA), Xen gel stent (Allergan, Dublin, Ireland); bold-face (statistically significant comparisons)