Dr. Nancy sehdev, N19886, Dr. Vijay Shetty, Dr. Ravneet Chadha, Dr. Dhamankar R R, Dr. Suhas Haldipurkar
Surgical procedures for glaucoma involving the creation of external access entail the risk of fibroblast proliferation and filtration closure. High frequency deep sclerotomy (HFDS) is a transcameral approach which bypasses the resistance of the trabecular meshwork by channeling aqueous humour directly to Schlemm’s canal. The HFDS function is available with Oertli® surgery systems. Abeeglaucoma Tip and the bipolar radiofrequency diathermy handpiece is required.
underwent HFDS
Methods: Study Design – Prospective cohort study. Site –Tertiary eye care (Laxmi Eye Institute, Panvel), Sample size – 92 eyes 71 patients were includedStudy duration: Patients were evaluated at post-operative 3 months and 6 months
Inclusion criteria: All open angle glaucoma patients undergoing HFDS
Exclusion criteria: Patient who were not available for follow up
Results:
Total : 92 eyes of 71 patients. Mean ± SD age : 62.95 ± 10.6. Male : 38 (54%), Females : 33 (46%)
IOP
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| IOP (GAT) | 20.67(±0.59) | 16.45(±0.78) | 15.9(±0.89) | <0.001 |
Temporal RNFL thickness
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| Temporal
(RNFL) |
69.53(±2.05) | 71.45(±2.93) | 69.83(±3.22) | 0.39 |
Superior RNFL thickness
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| Superior
RNFL |
87.17(±2.52) | 82.2(±3.56) | 78.4(±3.90) | 0.26 |
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| Superior
RNFL |
87.17(±2.52) | 82.2(±3.56) | 78.4(±3.90) | 0.26 |
Inferior RNFL thickness
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| Inferior RNFL | 84.18(±2.58) | 78.33(±3.65) | 74.92(±3.99) | 0.73 |
VFI
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Mean (SD) | Mean (SD) | Mean (SD) | P value | |
| VFI | 79.61(±3.34) | 77.24(±4.83) | 75.15(±5.35) | 0.73 |
Box Plot for MD
| Pre-operative | Post-operative 3 months | Post- operative 6 months | P value | |
| Median | Median | Median | P value | |
| MD | -6.11 | -5.91 | -5.74 | 0.89 |
Number of Anti glaucoma medications
Conclusion. Our study showed that there was significant reduction in IOP post-operatively. Number of AGM decreased drastically post-operatively. Visual field indices and RNFL thickness showed a non significant change as the post operative follow up were less
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