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Die Rolle des Stratus-OCT bei der Anti-VEGF-Therapie

Qualitative und quantitative Beurteilung bei neovaskulärer AMD

The role of Stratus OCT in anti-VEGF therapy

Qualitative and quantitative assessment of neovascular AMD

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Zusammenfassung

Hintergrund

Die Evaluierung des OCT3 während einer Anti-VEGF-Therapie.

Methodik

Im Rahmen einer AMD bekamen 29 Patienten mit choroidalen Neovaskularisationen insgesamt 3 intravitreale Injektionen mit Ranibizumab. Vor Therapiebeginn, nach 1 Woche sowie nach 1, 2 und 3 Monaten wurden OCT3-Untersuchungen durchgeführt sowie der Visus (ETDRS) ermittelt.

Ergebnisse

Die zentrale Netzhautdicke konnte mit dem OCT3 in 128 von 145 Messungen automatisch quantifiziert werden. Bei Monat 3 fand sich ein im Vergleich zur Baseline deutlicher Zusammenhang zwischen Abnahme der zentralen Netzhautdicke und Zunahme des Visus (84%), jedoch keine statistisch signifikante Korrelation (Pearson =−0,18). Generelle Einschränkungen waren eine inkorrekte Schichtensegmentierung und eine inadäquate Berechnung der zentralen Netzhautdicke bei ausgeprägten retinalen Läsionen.

Schlussfolgerung

Während einer Anti-VEGF-Therapie ermöglicht das OCT3 Dokumentation und Quantifizierung morphologischer Netzhautveränderungen und erlaubt in der Mehrzahl der Fälle auch Rückschlüsse auf funktionelle Verbesserungen. Ein direkter Zusammenhang zwischen Abnahme der Netzhautdicke in der OCT und Zunahme des Visus war jedoch nicht gegeben.

Abstract

Background

The evaluation of OCT3 during anti-VEGF therapy.

Methods

A total of 29 patients with choroidal neovascularization secondary to AMD received 3 intravitreal injections of ranibizumab. OCT examination and visual acuity testing (ETDRS) were performed before therapy onset, after 1 week and after 1, 2 and 3 months.

Results

The central retinal thickness (CRT) was assessed correctly by OCT in 128 out of 145 measurements. There was a distinct (84%) but not significant correlation between decrease in central retinal thickness and increase in visual acuity. Incorrect retinal layer segmentation and inadequate CRT measurements were a significant technical limitation.

Conclusion

During anti-VEGF therapy, OCT allows documentation and quantification of morphologic retinal changes and in most cases also for an estimation of functional improvement.

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Correspondence to U. Schmidt-Erfurth.

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Bolz, M., Ritter, M., Polak, K. et al. Die Rolle des Stratus-OCT bei der Anti-VEGF-Therapie. Ophthalmologe 105, 650–655 (2008). https://doi.org/10.1007/s00347-007-1639-1

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  • DOI: https://doi.org/10.1007/s00347-007-1639-1

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