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  • Title: Evaluation of congenital excavated optic disc anomalies with spectral-domain and swept-source optical coherence tomography.
    Author: Lee KM, Woo SJ, Hwang JM.
    Journal: Graefes Arch Clin Exp Ophthalmol; 2014 Nov; 252(11):1853-60. PubMed ID: 24906342.
    Abstract:
    PURPOSE: To investigate the anatomic characteristics of congenital excavated optic disc anomalies by using fundus photography, spectral-domain optical coherence tomography (SD-OCT), and swept-source optical coherence tomography (SS-OCT). METHODS: Fourteen eyes from 13 patients with congenital excavated optic disc anomalies underwent a complete ophthalmologic examination that included best-corrected visual acuity evaluation, fundus photography, and SD-OCT. SS-OCT was performed in cases of peripapillary staphyloma cases in which the excavation depth could not be detected with SD-OCT. On the basis of the funduscopic and OCT findings, patients were classified as morning glory syndrome, optic disc coloboma, or peripapillary staphyloma. RESULTS: Seven eyes with morning glory syndrome were characterized by the presence of the preretinal tractional membrane in front of the excavated optic disc and could be divided into two groups: three eyes without retinal excavation, and four eyes with retinal excavation. Four eyes with optic disc coloboma showed inferiorly decentered scleral excavations with shallow optic disc excavation detectable by SD-OCT. Three eyes with peripapillary staphyloma showed deep excavation, the depth of which could not be detected by SD-OCT. SS-OCT and enhanced depth imaging SD-OCT images focused on the bottom revealed membranous structure at the bottom of the excavation in two cases with peripapillary staphyloma. CONCLUSIONS: SD-OCT and SS-OCT are helpful for differential diagnosis of excavated optic disc anomalies. Morning glory syndrome, optic disc coloboma, and peripapillary staphyloma were respectively characterized by the presence of a preretinal tractional membrane, inferiorly decentered excavation, and an excavation deeper than that observed in morning glory syndrome and optic disc coloboma.
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