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WGC-2021

Abstract #82507 Published in IGR 20-4

Three-year outcomes of Descemet's stripping endothelial keratoplasty in eyes with pre-existing glaucoma drainage devices

Hernstadt DJ; Chai C; Tan A; Manotosh R
Canadian Journal of Ophthalmology 2019; 54: 577-584


BACKGROUND: Descemet's stripping endothelial keratoplasty (DSEK) is the most common procedure for corneal transplantation. The effect of a pre-existing glaucoma drainage device on long-term surgical outcomes is uncertain. METHODS: A retrospective chart review of all DSEK cases at an academic hospital over a 10-year period was conducted. RESULTS: 37 eyes who had undergone DSEK were included for analysis. These consist of 12 eyes with pre-existing GDD (GDD group), 13 eyes with glaucoma but no previous GDD (no-GDD group), and a control group of 12 patients with no ocular comorbidities apart from the indication for DSEK (control group). Visual acuity (VA) was significantly improved amongst all 3 groups, and there was no significant difference in VA between the GDD and no-GDD groups. There were no significant differences in absolute or increase in IOP between all three groups at 3 years. Graft survival rates of the 3 groups were not significantly different at 12 months. However, at 36 months, graft survival was 63% in the GDD group compared to 81% in the no-GDD group and 92% in the control group. In the GDD group, an increase in number of preoperative glaucoma drops, and a tube location in the anterior chamber were associated with an increased hazard ratio for failure. CONCLUSIONS: Presence of a GDD adversely affects graft survival whereas glaucomatous eyes which were medically managed or surgically managed without a GDD had survival rates comparable to controls. Glaucoma-filtering surgeries may confer graft survival advantage over tube shunt surgeries after DSEK.

Department of Ophthalmology, National University Health Systems, Singapore, Singapore.

Full article

Classification:

12.8.2 With tube implant or other drainage devices (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
9.4.11.4 Glaucomas associated with corneal surgery (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.11 Glaucomas following intraocular surgery)



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WGC-2021