Long-term changes of retinal pigment epithelium in the eyes with Vogt-Koyanagi-Harada disease observed by adaptive optics imaging
Authors Nakamura T, Hayashi A, Oiwake T
Received 29 December 2018
Accepted for publication 26 April 2019
Published 31 May 2019 Volume 2019:13 Pages 927—933
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 2
Editor who approved publication: Dr Scott Fraser
Tomoko Nakamura, Atsushi Hayashi, Toshihiko Oiwake
Department of Ophthalmology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
Purpose: To observe long-term changes of the retinal pigment epithelium (RPE) in the eyes of patients with Vogt-Koyanagi-Harada (VKH) disease using an adaptive optics (AO) fundus camera, and their correlation with the findings of spectral-domain optical coherence tomography (SD-OCT), fundus autofluorescence (AF) imaging.
Patients and methods: Three eyes of two patients with new-onset acute VKH disease were retrospectively studied. After the serous retinal detachment was resolved by high-dose corticosteroid treatment, the patients were examined with SD-OCT, blue-wavelength AF, near-infrared (NIR) AF, and an AO fundus camera. AO images of the macula were obtained using the rtx1TM, AO fundus camera. The area around the foveal center of the hyper-reflective lesion in AO imaging was measured manually. The time at which the serous retinal detachment resolved was set as the baseline, and AO and other images were obtained every 3 to 6 months from the baseline.
Results: In all three eyes, lesions with elevation or thickening of the RPE layer were observed with OCT imaging in the macula after the serous retinal detachment resolved. These lesions showed hyper-autofluorescence in NIR-AF image and hyper-reflective lesions with clear boundaries in AO image. The area of the hyper-reflective lesions of AO images in each eye showed an approximately 40% decrease at 6 months from baseline. However, the hyper-reflective lesion remained to some extent after 18 months in case 1 and 36 months in case 2.
Conclusions: By using OCT, fundus autofluorescence and AO images, it was possible to observe temporal changes of RPE layer in VKH eyes noninvasively. High-resolution AO images also allow us to observe for improvements in the elevation or thickening of the RPE layer quantitatively.
Keywords: adaptive optics, fundus autofluorescence, near-infrared imaging, Vogt-Koyanagi-Harada disease, retinal pigment epithelium
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