Evaluation of peripheral fundus autofluorescence in eyes with wet age-related macular degeneration
Received 23 August 2016
Accepted for publication 7 October 2016
Published 14 December 2016 Volume 2016:10 Pages 2497—2503
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Scott Fraser
Tetsuyuki Suetsugu,1,2 Aki Kato,1 Munenori Yoshida,1 Tsutomu Yasukawa,1 Akiko Nishiwaki,1,3 Norio Hasegawa,1 Hideaki Usui,1 Yuichiro Ogura1
1Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 2Department of Ophthalmology, General Kamiiida Daiichi Hospital, 3Nishiwaki Eye Clinic, Nagoya, Aichi, Japan
Purpose: We aimed to evaluate the prevalence of abnormal peripheral fundus autofluorescence (FAF) in wet age-related macular degeneration (AMD) using wide-field imaging instrument.
Patients and methods: A retrospective, case-controlled study involving 66 eyes of 46 Japanese wet AMD patients and 32 eyes of 20 control patients was performed. Wide-field FAF images were obtained for typical AMD (37 eyes/28 patients), polypoidal choroidal vasculopathy (PCV) (22 eyes/20 patients), and retinal angiomatous proliferation (RAP) (seven eyes/four patients). Two masked ophthalmologists independently graded the images for mottled, granular, and nummular patterns. Main outcome measures were abnormal peripheral FAF frequencies and relative risks by disease subgroups and treatments.
Results: Abnormal peripheral FAF patterns were found in 51.5% of wet AMD eyes compared with 18.8% of control eyes (P<0.001). Mottled, granular, and nummular patterns were found in 45.5%, 31.8%, and 16.7%, respectively, of wet AMD eyes. Each disease subgroup (typical AMD, 54.1%; PCV, 36.4%; and RAP, 85.7%) showed significantly higher frequencies of peripheral FAF (P<0.001, P=0.03, and P<0.001, respectively) than control eyes (18.8%). There were no significant differences (P=0.76) between the frequencies in untreated and treated eyes.
Conclusion: Eyes of Japanese wet AMD patients had a higher abnormal FAF prevalence compared with control eyes. Among the three disease subtypes, abnormal patterns were least prevalent in PCV eyes.
Keywords: age-related macular degeneration, fundus autofluorescence, polypoidal choroidal vasculopathy, retinal angiomatous proliferation
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