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Graefes Arch Clin Exp Ophthalmol
2019 Mar 01;2573:485-493. doi: 10.1007/s00417-018-04205-x.
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Vascular remodeling of choroidal neovascularization in older myopic patients treated with ranibizumab.
Cohen SY
,
Tabary S
,
El Ameen A
,
Mrejen S
,
Quentel G
,
Giocanti-Auregan A
.
Abstract
PURPOSE: To investigate morphological changes in myopic choroidal neovascularization (mCNV) using optical coherence tomography-angiography (OCT-A) after treatment with ranibizumab.
METHODS: Retrospective analysis of consecutive patients over a 24-month period. All treatment-naïve mCNV were imaged at baseline with color pictures, spectral-domain OCT and OCT-A, and fluorescein angiography in selected cases. CNV morphology was classified at baseline and at 6 months. The CNV lesion surface was also compared.
RESULTS: Twenty-nine patients with a mean age of 70.3 ± 10.1 years were included. They received a mean number of 2.65 injections over 6 months. Best-corrected visual acuity improved from 62.2 to 68.5 letters (p = 0.004), with regression of exudation in 24 eyes (82.7%). Baseline CNV was classified into tree-in-bud (16 eyes), medusa (9 eyes), or sea-fan (4 eyes) pattern. At 6 months, no abnormal blood flow was observed in CNV in 13 eyes. Eyes with complete regression or evolution towards an indistinct pattern showed more often a complete regression of exudation than eyes with unchanged pattern (p = 0.007). The mean CNV surface significantly decreased from 0.19 to 0.08 mm2 (p < 0.0001).
CONCLUSION: An unchanged pattern was more often associated with exudation persistence, while a complete regression or evolution towards indistinct pattern was always associated with vascular inactivity. However, variable changes in mCNV were observed after anti-VEGF. Thus, OCT-A could be more useful in the diagnosis than in the follow-up of mCNV.
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