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Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 4/2020

01-04-2020 | Angiography | Retinal Disorders

Decrease in the number of microaneurysms in diabetic macular edema after anti-vascular endothelial growth factor therapy: implications for indocyanine green angiography-guided detection of refractory microaneurysms

Authors: Kenichiro Mori, Shigeo Yoshida, Yoshiyuki Kobayashi, Keijiro Ishikawa, Shintaro Nakao, Toshio Hisatomi, Masatoshi Haruta, Tatsuro Isihibashi, Koh-hei Sonoda

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 4/2020

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Abstract

Purpose

We evaluated changes in the numbers of microaneurysms (MAs) on fluorescein angiography (FA) and indocyanine green angiography (IA) in eyes with diabetic macular edema (DME) following intravitreal injection of anti-vascular endothelial growth factor (VEGF) agents.

Methods

Twenty-one eyes of 16 patients with DME were included in this retrospective study. All patients received an initial loading dose of three monthly injections of anti-VEGF agents; thereafter, they received a pro re nata regimen for at least 12 months of follow-up. FA and IA images were obtained before and at 6 months after the initial injection.

Results

The median numbers of MAs significantly decreased from six (interquartile range [IQR] 3–7) MAs in early-phase FA, three (IQR 3–5) leaky MAs in late-phase FA, and two (IQR 1–4) MAs in late-phase IA at baseline to two (IQR 1–3) MAs in early-phase FA, one (IQR 0–2) leaky MA in late-phase FA, and one (IQR 0–2) MA in late-phase IA at 6 months (P < 0.0001 for all). Only the median numbers of MAs in late-phase IA at baseline and at 6 months were significantly higher in the recurrent DME group (13 eyes) than in the non-recurrent DME group (five eyes) (three [IQR 2–4] vs one [IQR 1–2], one [IQR 0.5–2] vs zero [P = 0.0185 and P = 0.009]).

Conclusion

Intravitreal injection of anti-VEGF agents reduced the numbers of MAs in patients with DME. The numbers of MAs detected by late-phase IA might be useful predictors of DME recurrence.
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Metadata
Title
Decrease in the number of microaneurysms in diabetic macular edema after anti-vascular endothelial growth factor therapy: implications for indocyanine green angiography-guided detection of refractory microaneurysms
Authors
Kenichiro Mori
Shigeo Yoshida
Yoshiyuki Kobayashi
Keijiro Ishikawa
Shintaro Nakao
Toshio Hisatomi
Masatoshi Haruta
Tatsuro Isihibashi
Koh-hei Sonoda
Publication date
01-04-2020
Publisher
Springer Berlin Heidelberg
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 4/2020
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-020-04608-9

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