Abstract
Purpose:
Compare these two techniques in order to determine their safety and effectiveness in IOP control.
Methods:
Retrospective study of patients with diagnosis of glaucoma who underwent glaucoma surgery. The techniques evaluated were Ex-Press shunt implantation (ESI) versus Non Penetrating Deep Sclerectomy (NPDS). We followed them through 3 months with intraocular pressure (IOP), visual fields (VF), complication rate and requirement of glaucoma medication.
Results:
19 patients (12 females and 7 males) were included in this study, 9 underwent NPDS and 10 ESI. In the NPDS group there was a mean age of 59 years (±15.47), all of them with diagnosis of Primary Open Angle Glaucoma. VA pre-intervention average was 0.34 LogMar (±0.27). VA post-intervention was 0.46 LogMar (±0.35). Basal IOP of 14.75 mmHg (±3.77). Post-surgical evaluation went as follows: 1 day IOP 18.11 mmHg (± 8.23), 1 week IOP 9.62 mmHg (±4.4), 1 month IOP 11mmHg (±3), 3 months IOP13.62 mmHg (±3.62). VF -11.06 (±8.4).<br /> In the ESI group the mean age was 47 years (±24.96). Only in 1 patient mitomicin was trans-surgically applied. VA pre-intervention average was 0.21 LogMar (±0.24). VA post-intervention was 0.25 LogMar (±0.35). Basal IOP of 29.2 mmHg (±11.35) Post-surgical evaluation: 1 day IOP 6 mmHg (±6.25),1 week IOP 6.4 mmHg (±5.71), 1 month IOP 12.5 mmHg (±3.62), 3 months IOP 11.9. VF -21.43 MD (±5.62). Post-surgically 5 patients required 5 fluorouracil application.
Conclusions:
Both groups (NPDS and ESI) were analized using ANOVA and we found no statistically significant difference between IOPs during the follow-up period. There is no difference between both techniques efficacy, however a larger sample of patients will be needed to verify this data.