Background： Morphological changes of the vasculature system in patients with myopia have been observed by Doppler ultrasound and fundus fluorescein angiography （FFA）; however, these studies have limitations. Dopple...Background： Morphological changes of the vasculature system in patients with myopia have been observed by Doppler ultrasound and fundus fluorescein angiography （FFA）; however, these studies have limitations. Doppler ultrasound provides low-resolution images which are mainly obtained from visualized large vessels, and FFA is an invasive examination. Optic coherence tomography （OCT） angiography is a noninvasive, high-resolution measurement for vascular density. The purpose of this study was to investigate the change of vascular density in myopic eyes using OCT angiography. Methods： This cross-sectional study includes a total of 91 eyes ~Yom 47 participants including control, moderate, and high myopia that were evaluated by OCT angiography. Patients with myopia were recruited from the Refractive Department, Shenzhen Aier Eye Hospital, from August 5, 2015 to April 1, 2016. Emmetropic eyes were from healthy volunteers. The vascular density at macula and optic disc regions, ganglion cell complex （GCC） thickness, and retinal nerve fiber layer （RNFL） thickness were measured. Their relationships with axial length （AL） and refractive error were analyzed. One-way analysis of variance （ANOVA）, Pearson＇s correlation, and generalized estimating equation were used for statistical analysis, Results： Both superficial and deep macular vascular density were highest in control （25.64% ± 3.76% and 37.12% ± 3.66%, respectively）, then in moderate myopia （21.15% ± 5.33% and 35.35% ± 5.50%, respectively）, and lowest in high myopia group （ 19.64% ± 3.87% and 32.81% ± 6.29%, respectively） （F =13.74 and 4.57, respectively; both P 〈 0.001）. Both superficial （β = -0.850 and 0.460, respectively） and deep （β = -0.766 and 0.396, respectively） macular vascular density were associated with AL and spherical equivalent （all P 〈 0.001 ）. Superficial macular vascular density was associated with GCC thickness （β = 0.244, P = 0.040）, independent of spherical equivalent. The vas展开更多
文摘Background： Morphological changes of the vasculature system in patients with myopia have been observed by Doppler ultrasound and fundus fluorescein angiography （FFA）; however, these studies have limitations. Doppler ultrasound provides low-resolution images which are mainly obtained from visualized large vessels, and FFA is an invasive examination. Optic coherence tomography （OCT） angiography is a noninvasive, high-resolution measurement for vascular density. The purpose of this study was to investigate the change of vascular density in myopic eyes using OCT angiography. Methods： This cross-sectional study includes a total of 91 eyes ~Yom 47 participants including control, moderate, and high myopia that were evaluated by OCT angiography. Patients with myopia were recruited from the Refractive Department, Shenzhen Aier Eye Hospital, from August 5, 2015 to April 1, 2016. Emmetropic eyes were from healthy volunteers. The vascular density at macula and optic disc regions, ganglion cell complex （GCC） thickness, and retinal nerve fiber layer （RNFL） thickness were measured. Their relationships with axial length （AL） and refractive error were analyzed. One-way analysis of variance （ANOVA）, Pearson＇s correlation, and generalized estimating equation were used for statistical analysis, Results： Both superficial and deep macular vascular density were highest in control （25.64% ± 3.76% and 37.12% ± 3.66%, respectively）, then in moderate myopia （21.15% ± 5.33% and 35.35% ± 5.50%, respectively）, and lowest in high myopia group （ 19.64% ± 3.87% and 32.81% ± 6.29%, respectively） （F =13.74 and 4.57, respectively; both P 〈 0.001）. Both superficial （β = -0.850 and 0.460, respectively） and deep （β = -0.766 and 0.396, respectively） macular vascular density were associated with AL and spherical equivalent （all P 〈 0.001 ）. Superficial macular vascular density was associated with GCC thickness （β = 0.244, P = 0.040）, independent of spherical equivalent. The vas
