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  • Title: Inner and outer central retinal findings after surgery for rhegmatogenous retinal detachment using different spectral-domain optical coherence tomography devices.
    Author: Matlach J, Pflüger B, Hain J, Göbel W.
    Journal: Graefes Arch Clin Exp Ophthalmol; 2015 Mar; 253(3):369-80. PubMed ID: 25030236.
    Abstract:
    PURPOSE: The aim of the study was to analyse macular changes after rhegmatogenous retinal detachment (RRD) repair using spectral-domain optical coherence tomography (SD-OCT). METHODS: Forty eyes with macula-on and 27 eyes with macula-off RRD underwent scleral buckling or vitrectomy and were postoperatively imaged using 2 SD-OCT devices (Cirrus® HD-OCT, RTVue-100®). Measurement of total and inner macular thickness consisting of ganglion cell layer + inner plexiform layer (GCL-IPL) using Cirrus or retinal nerve fibre layer + ganglion cell layer + inner plexiform layer (RNFL-GCL-IPL) using RTVue was performed. Results of inner macular thickness were compared with image results of 40 healthy controls. Qualitative analysis of inner and outer retinal layers was additionally assessed. RESULTS: Measurement of overall retinal thickness within the 9 ETDRS sectors was highly correlated between both OCTs (Pearson's r, range 0.88-0.99; p < 0.001). Correlation of RNFL-GCL-IPL complex between OCTs was excellent in both surgery groups (Pearson's r, range 0.73-0.88; p < 0.001) and normal controls (Pearson's r, range 0.79-0.90; p < 0.001). The RNFL-GCL-IPL complex was thicker in both surgery groups compared to normal controls using Cirrus. Outer retinal findings of macula-off patients were seen in four eyes (14.8 %). Visual acuity (VA) significantly improved in both groups independent of preoperative VA or duration of symptoms. CONCLUSION: Agreement between both OCTs was excellent for overall and inner retinal thickness, although RTVue measured a thicker RNFL-GCL-IPL complex. Thinning of inner retinal layers as a potential cause of poor VA was rarely detected, possibly due to tractional changes at the vitreomacular interface. VA improved even in patients with macula-involving RRD.
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