Abstract
Objective To observe the characteristics of blue light(BLAF) versus near infrared wavelength (IRAF) fundus autofluorescence in central serous chorioretinopathy (CSC) patients. Methods Seventy-seven eyes of 81 patients diagnosed with CSC were enrolled in this study. According to the duration of disease, patients were divided into acute CSC group and chronic or recurrent CSC group. All patients were examined with fundus fluorescein angiography, including BLAF and IRAF. There were forty-six patients (47 eyes) with acute, thirty-one patients (34 eyes) with chronic or recurrent CSC. The characteristics of BLAF and IRAF in CSC were compared. Results In acute CSC, there were nineteen eyes (40.4%) showed scattered hyper-fluorescence corresponding to the leaking points, eleven eyes (23.4%) showed mottled hypo-fluorescence in BLAF; while 17 eyes (36.2%) showed normal change corresponding to the leaking points. There were 35 eyes can be observed serous retinal detachments in the BLAF images, 21 eyes (60.0%) showed hypo-fluorescence and 14 eyes (40.0%) showed hyper-fluorescence. In the IRAF images, 25 eyes (53.2%) showed mottled fluorescence corresponding to the leaking points, 11 eyes (23.4%) presented with scattered hyper-fluorescent spots and normal fluorescence. The serous retinal detachments of 26 eyes exhibited hypo-fluorescence in the IRAF images. In chronic or recurrent CSC, 19 eyes (55.9%) showed scattered hyper-fluorescence corresponding to the leakage points; followed by no abnormal change in 10 eyes, accounting for 29.4%; few showed mottled hypo-fluorescence (5 eyes 14.7%). There were 35 eyes (41.2%) can be observed serous retinal detachments in the BLAF images. IRAF mainly displayed mottled hypo-fluorescence (22 eyes, 64.7%), ten eyes (29.4%) presented with scattered hyper-fluorescence and 2 eyes (5.8%) presented without abnormal change. The serous retinal detachments of 3 eyes (8.8%) exhibited hypo-fluorescence in the IRAF images. Conclusions For acute CSC, a variety of fluorescence were showed in BLAF images and the proportion of the various fluorescences was similar; hypo-fluorescence was showed in the IRAF images. For chronic CSC, hyper-fluorescence was showed in BLAF while hypo-fluorescence in the IRAF images. Key words: Central serous chorioretinopathy; Fluorescein angiography; Diagnostic imaging
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