[
    {
        "id": "osp-12565",
        "type": "article-journal",
        "title": "Comparison of choroidal thickness using swept-source and spectral-domain optical coherence tomography in normal Indian eyes",
        "author": [
            {
                "family": "Narendran",
                "given": "Siddharth"
            },
            {
                "family": "Manayath",
                "given": "George"
            },
            {
                "family": "Venkatapathy",
                "given": "Narendran"
            }
        ],
        "URL": "https://omanscience.com/ar/articles/comparison-of-choroidal-thickness-using-swept-source-and-spectral-domain-optical-coherence-tomography-in-normal-indian-eyes",
        "language": "en",
        "issued": {
            "date-parts": [
                [
                    2018
                ]
            ]
        },
        "container-title": "Oman Journal of Ophthalmology",
        "volume": "11",
        "issue": "1",
        "page": "38-41",
        "DOI": "10.4103/ojo.ojo_27_2017",
        "publisher": "Medknow Publications",
        "ISSN": "0974-620X",
        "abstract": "Background/aims: Choroidal thickness measurements are reported to differ between spectral-domain optical coherence tomography (SD-OCT) and swept-source OCT (SS-OCT). The aim of this study was to assess the comparability of choroidal thickness measurements using SS-OCT and SD-OCT devices among normal participants.\n\nMaterials and methods: This was a prospective study of 31 (62 eyes) normal participants. Choroidal imaging was performed sequentially with the Spectralis OCT (SD-OCT) and the deep range imaging OCT (DRI OCT-1) (SS-OCT) using standardized imaging protocols. The subfoveal choroidal thickness (SFChT) was measured manually by two masked retinal specialists. Paired t-tests and intraclass correlation coefficients (ICCs) were used to compare the measurements.\n\nResults: The mean SFChT was 319.5 μm and 325.3 μm for DRI OCT-1 and Spectralis OCT, respectively (P = 0.001), with a mean difference of 5.9 with ICC of 0.97. The mean difference in choroidal thickness between the OCT devices was larger among eyes with choroidal thickness > 350 μm compared with eyes with thinner choroids (8.0 μm vs. 4.7 μm).\n\nConclusions: SFChT measurements are comparable between DRI OCT-1 and Spectralis OCT. The variability between the devices increases in thicker choroids."
    }
]