The inter-visit variability of retinal blood flow velocity measurements using retinal function imager (RFI)  

作　　者：Yuqing Deng Meng Li Gengyuan Wang Hong Jiang Jianhua Wang Jing Zhong Saiqun Li Jin Yuan 

机构地区：[1]State Key Laboratory of Ophthalmology,Zhongshan Ophthalmic Centre,Sun Yat-sen University,Xianlie Road 54,Guangzhou 510060,China [2]Bascom Palmer Eye Institute,University of Miami Miller School of Medicine,Miami,FL,USA

出　　处：《Eye and Vision》2018年第1期275-282,共8页眼视光学杂志（英文）

基　　金：support of this paper came from the National Key R&D Program of China to JY(2017YFC0112400 and 2017YFC0112402)in the Zhongshan Ophthalmic Center,Sun Yat-sen University;supported by grants from the National Natural Science Foundation of China to JY(81670826);the Science and Technology Planning Project of Guangdong Province,China to JY(2016A020215093);the Research Program of Sun Yat-sen University(5-5 Program),China to JY(3030901010080).

摘　　要：Background:To determine the inter-visit variability of retinal blood flow velocities(BFVs)using a retinal function imager(RFI)in healthy young subjects.Methods:Twenty eyes of 20 healthy young subjects were enrolled.RFI imaging was performed to obtain the BFVs in retinal arterioles and venules in a field measuring 7.3×7.3 mm^(2)(setting:35 degrees)centered on the fovea,and repeated measurements were obtained on two separate days.The inter-visit variability of BFVs was assessed by the concordance correlation coefficient(CCC)and coefficient of variance(CV).Results:At the first visit,the mean BFV was 3.6±0.8 mm/s and 3.0±0.7 mm/s in arterioles and venules,respectively,which were not significantly different from those at the second visit(the BFV of arterioles was 3.5±0.8 mm/s,and the BFV of venules was 3.0±0.7 mm/s,P>0.05,respectively).The CCC was 0.72 in the BFVs of arterioles and 0.67 in venules,and the CV was 10.8%in the BFVs of arterioles and 11.0%in venules.Conclusion:The inter-visit variability using the retinal function imager(RFI)with a large field of view appeared to be good and comparable to previously reported intra-visit and inter-eye variability.

关 键 词：Inter-visit variability Retinal blood flow velocity Retinal function imager Concordance correlation coefficient(CCC) Coefficient of variance(CV) 

分 类 号：P73[天文地球—海洋科学]