Objective To investigate the characteristics of choroidal neovascularization(CNV) in optical coherence tomography angiography(OCTA)versus fluorescein angiography(FFA).
Methods The data of 116 patients with CNV diagnosed in our hospital were retrospectively reviewed, and 116 eyes were included in study after exclusion of those in scar stages. The characteristics of OCTA and FFA conducted in theses eyes in the same period were analyzed.
Results OCTA results showed that the glomerulus-shaped CNV accounted for the most proportion(48.3%), followed by Medusa-shaped (36.2%) and withered tree-shaped(15.5%), and the darkness around lesions accounted for 64.3%, 71.4% and 22.2%, respectively. FFA showed that the proportions of passive leakage and typical leakage were 58.6%and 41.4%, respectively, and the proportions of passive leakage combined with hemorrhage, exudation and pigmentation disorder were 50.0%, 38.2% and 35.3%, respectively. OCTA showed that the ratios of glomerulus-shaped or Medusa-shaped lesions combined with darkness around lesions to typical leakage were 37.5%, 25.0%, respectively, and the withered tree-shaped lesions combined with darkness to typical leakage ratio was 16.7%.
Conclusion Compared with FFA, OCTA has the advantages of non-contact, fast scanning and high resolution.
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