[
    {
        "id": "osp-12860",
        "type": "article-journal",
        "title": "A comparative study of two methods of optic disc evaluation in patients of glaucoma",
        "author": [
            {
                "family": "Chandra",
                "given": "Anuradha"
            },
            {
                "family": "Bandyopadhyay",
                "given": "Arun Kumar"
            },
            {
                "family": "Bhaduri",
                "given": "Gautam"
            }
        ],
        "URL": "https://omanscience.com/ar/articles/a-comparative-study-of-two-methods-of-optic-disc-evaluation-in-patients-of-glaucoma",
        "language": "en",
        "issued": {
            "date-parts": [
                [
                    2013
                ]
            ]
        },
        "container-title": "Oman Journal of Ophthalmology",
        "volume": "6",
        "issue": "2",
        "page": "103-107",
        "DOI": "10.4103/0974-620x.116643",
        "publisher": "Medknow Publications",
        "ISSN": "0974-620X",
        "abstract": "Introduction: Glaucoma is a progressive disorder and requires serial evaluation in order to monitor disease progression and optimize therapy.\n\nObjective: The objective of this study was to determine the correlation between each of cup/disc (C/D) ratio and the disc damage likelihood scale (DDLS) with retinal nerve fiber layer (RNFL) and global indices in Humphrey field analyzer II (HFA II).\n\nDesign: Cross-sectional study.\n\nMaterials and methods: A total of 50 patients diagnosed with primary open angle glaucoma were examined to grade DDLS score and C/D ratio. The average (avg) RNFL was obtained using the Fast RNFL protocol on optical coherence tomography (OCT) (4.0.2 Carl Zeiss). HFA II Swedish Interactive Threshold Algorithm Standard 24-2 visual fields were obtained within 1 month of clinical examination. The correlation of C/D ratio with avg RNFL thickness, Mean deviation and Pattern standard deviation was calculated by Pearson correlation coefficient (r). Similar coefficients were obtained for DDLS.\n\nResults: The P value for the difference in the r between C/D ratio with RNFL (-0.628) and DDLS with RNFL (-0.8369) was significant (P < 0.01) when correlation of C/D, DDLS with RNFL was considered.\n\nConclusion: The DDLS shows stronger correlation with structural changes in OCT than C/D ratio. The disc diameter and rim width increases the value of clinical optic disc examination."
    }
]