ハシヤ　ノゾム   Hashiya Nozomu   橋谷　臨    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
言語種別	英語
発表タイトル	Choroidal blood vessels including vortex vein visualization in high myopia using the wide range red separation view
会議名	Asia-ARVO 2017
学会区分	国際学会及び海外の学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	Hashiya Nozomu, Maruko Ichiro, Koizumi Hideki, Hasegawa Taiji, Arakawa Hisaya, Iida Tomohiro
発表年月日	2017/02
開催地 （都市, 国名）	Brisbane, Australia
概要	Purpose Vortex veins might be located in the posterior pole part for the high myopia, but this had difficulty in proof without indocyanine green angiography. We usually photograph Ultra-widefield Fundas Imaging (Optos California, Optos) using a red-green wavelength, but also can photograph it using only a red wavelength. We report that observation of the choroidal blood vessels structure of the high myopia and vortex veins using Red Separation View of Optos. Methods We included in this study 53 eyes of 29 patients with high myopia (spherical equivalent of refractive error ≥ 8.00 diopters or axis length ≥ 26.5mm, 12 men, 17 women, average of 47.6 years old). We take all cases with Ultra-widefield Fundas Imaging (Optos California, Optos). Also, we observed 36 eyes of 19 patients (spherical equivalent of refractive error ≤±2.00 diopters, 8 men, 11 women, average of 50.3 years old) that fundas don’t have abnormality as the control group. Results The mean spherical equivalent of refractive error of the high myopia group and the control group is -12.4D and -0.73D (the intraocular lens eyes are excluded), respectively. The choroidal blood vessels were observable with 50 eyes (94.3%) in the high myopia group except 3 eyes of the macula area strong atrophy, but choroidal blood vessels were not observable with 18 eyes (50%) clearly in posterior pole part in the control group. The vortex veins of the posterior pole part were found in 8 eyes (16.0%) in the high myopia group and were not found in the control group. Conclusion Using Red Separation View of Optos could visualize choroidal blood vessels of the high myopia and prove the presence of vortex veins at the posterior pole part. Optos is useful to evaluate choroidal blood vessels structure of the high myopia noninvasively