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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).
Funding Supported by grant No 16591750 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.