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12.12.2016 | Retinal Disorders | Ausgabe 4/2017 Open Access

Graefe's Archive for Clinical and Experimental Ophthalmology 4/2017

Vitreoretinal interface abnormalities in patients treatedwith ranibizumab for diabetic macular oedema

Zeitschrift:
Graefe's Archive for Clinical and Experimental Ophthalmology > Ausgabe 4/2017
Autoren:
Yun Wong, David H. W. Steel, Maged S. Habib, Alex Stubbing-Moore, Dalvir Bajwa, Peter J. Avery, The Sunderland Eye Infirmary study group
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s00417-016-3562-0) contains supplementary material, which is available to authorized users.

Abstract

Purpose

Intravitreal anti-vascular endothelial growth factor (VEGF) agents are effective in the treatment of central involving diabetic macular oedema (DMO). Vitreoretinal interface abnormalities (VRIA) are common in patients with DMO, and the effect of these on the response to anti-VEGF treatment is unclear. Furthermore the effect of anti-VEGF agents on the VRIA itself is uncertain.

Method

Prospective study of consecutive patients treated with ranibizumab (RZB) for DMO as part of routine clinical care in one eye unit over a 1-year period. Visual acuity (Va), central retinal thickness (CRT) and injection frequency data was recorded on an electronic database. Treatment was initiated with four monthly RZB injections and then a monthly PRN regime. All patients underwent high-density spectral-domain optical coherence tomography (SDOCT) at baseline and 12 months. The SDOCTs were graded by two observers masked to the outcome.

Results

One hundred and four eyes (77 patients) were included in the analysis. The mean age was 62 years, and 62% were male. The mean presenting vision was 62 letters and CRT 472 μm. Eighty eyes retained stable Va, and 17 had an improvement in Va. At baseline, 39 eyes had associated focal vitreomacular adhesion (VMA) and by 12 months this reduced to 30 (p = 0.04), with 12 releasing VMA and three developing it. Patients with VMA had significantly better final Va than those without VMA. Improvement in CRT was greatest in those where VMA released during the study. Forty-five eyes had some degree of foveal involving epiretinal membrane (ERM) at baseline, and 28 were considered to have clinically significant ERM. There was no clinically relevant change in ERM during the study. Patients with significant ERM at baseline had a lower final vision. Multivariate analysis showed that ERM and more severe retinopathy at baseline were predictive of less visual improvement (p < 0.01). Shorter intraretinal cyst length, ERM and the absence of VMA at baseline were predictive of a worsened anatomical response (p < 0.001).

Conclusion

VRIA are related to outcome in patients treated with RZB. ERM was associated with a worsened visual and anatomic response, and VMA with an improved anatomical response particularly when spontaneous VMA release occurred during treatment. The presence and severity of ERM was not affected by RZB treatment.

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Zusatzmaterial
Table S1 (DOCX 13 kb)
417_2016_3562_MOESM1_ESM.docx
Table S2 (DOCX 13 kb)
417_2016_3562_MOESM2_ESM.docx
Literatur
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