Abstract
Background
To evaluate retinal thickness using spectral-domain optical coherence tomography (SD-OCT) with reduced speckle noise in eyes with polypoidal choroidal vasculopathy (PCV) compared to those with normal eyes and those with central serous chorioretinopathy (CSC).
Methods
We retrospectively reviewed cases of foveal serous retinal detachment in 36 eyes of 36 patients with active CSC and 23 eyes of 23 patients with active PCV, and 44 eyes of 44 normal subjects. Patients were examined using SD-OCT with reduced speckle noise, and the thickness of the outer nuclear layer (ONL), photoreceptor inner segment (IS), and photoreceptor outer segment (OS) were measured.
Results
The ONL and IS were thicker in normal eyes than in eyes with CSC or PCV (P < 0.001). The OS was significantly less thick in eyes with PCV than in normal eyes (P < 0.001), whereas there was no significant difference between eyes with CSC and normal eyes. The thickness of IS and OS in eyes with PCV was related to fibrin or hemorrhage being present in the subretinal space. In eyes with PCV, best-corrected visual acuity at baseline correlated with IS thickness (P = 0.023).
Conclusions
Thinning of each photoreceptor layer was observed in the eyes of PCV patients as compared to that observed in the case of normal individuals. The differentiating factors between PCV and CSC, observed using SD-OCT, include the thinning of the OS in eyes with PCV, which makes SD-OCT helpful in differentiating PCV from CSC. More severe photoreceptor alterations were seen in PCV, because fibrin and hemorrhage were present in the subretinal space, which correlated with poorer vision.
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Acknowledgement
We wish to thank the imaging specialists of Kyoto University OCT Reading Center (Mayumi Yoshida and Akiko Hirata) for measuring retinal thickness.
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This research was supported in part by a Grant-in-Aid for Scientific Research (21796179) from the Japan Society for the Promotion of Science (JSPS).
All authors have full control of all primary data, and agree to allow Graefe's Archive for Clinical and Experimental Ophthalmology to review our data upon request.
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No author has any financial interest/conflict of interest to disclose.
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Table 1
Retinal thickness at the baseline and at last follow-up in subjects over 60 years old without fibrin or hemorrhage in the subretinal space (DOC 48 kb)
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Ooto, S., Tsujikawa, A., Mori, S. et al. Thickness of photoreceptor layers in polypoidal choroidal vasculopathy and central serous chorioretinopathy. Graefes Arch Clin Exp Ophthalmol 248, 1077–1086 (2010). https://doi.org/10.1007/s00417-010-1338-5
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DOI: https://doi.org/10.1007/s00417-010-1338-5