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The choroidal circulation in high myopia decreases in conjunction with ocular enlargement experimentally and clinically.1 2 Using indocyanine green angiography (ICGA), investigators have reported narrowing and loss of the large choroidal vessels during the follow-up period.3 4 ICGA is a useful diagnostic tool with which to observe the choroidal circulation, and Heidelberg retina angiography 2 (HRA2; Heidelberg Engineering, Heidelberg, Germany) is a confocal laser scanning system that provides a higher resolution of ICGA compared with the conventional fundus camera. In the current study, we report a new finding of choroidal vasculature seen on HRA2-ICGA.
A 78-year-old woman had myopic choroidal neovascularization (mCNV) in her right eye. The best-corrected visual acuity (BCVA) was 20/40. The axial length was 27.93 mm. Fluorescein angiography (FA) and fundus photography showed subfoveal choroidal neovascularization (CNV) and several patchy atrophies. Early-phase HRA2-ICGA showed a filling delay, and late-phase HRA2-ICGA showed several linear hypofluorescences that corresponded exactly with the choroidal vessels that were perfused in the early. Conventional ICGA did not detect linear hypofluorescence (figs 1A–D, 2).