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Abstract #90266 Published in IGR 21-3

Diagnostic Accuracy of Wide-Field Map from Swept-Source Optical Coherence Tomography for Primary Open-Angle Glaucoma in Myopic Eyes

Kim YW; Lee J; Kim JS; Park KH
American Journal of Ophthalmology 2020; 218: 182-191

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PURPOSE: To compare the accuracy of glaucomatous defects and diagnostic power for primary open-angle glaucoma (POAG) between swept-source optical coherence tomography (SS-OCT) and spectral-domain OCT (SD-OCT) in myopic eyes. DESIGN: Prospective, case-control study. METHODS: A total of 150 myopic POAG eyes and 100 healthy myopic eyes underwent SD-OCT and SS-OCT in random order on the same day. The locations of glaucomatous defects on SD-OCT thickness and deviation maps and SS-OCT wide-field thickness (thickness surfaces) and SuperPixel maps were rated, and the maps' accuracies were compared. The area under receiver operating characteristic (AUROC) of the peripapillary retinal nerve fiber layer (RNFL) and the macular parameters (GCL++: equivalent to ganglion cell-inner plexiform layer [GCIPL] + RNFL; GCL+: equivalent to GCIPL) from each of the devices for myopic POAG were calculated and compared. RESULTS: The wide-field RNFL thickness (thickness surface) map showed the best accuracy for glaucomatous defects in the inferotemporal (96.4%) and superotemporal (92.4%) regions. The RNFL/GCL++/GCL+ wide-field thickness (thickness surface) map showed better accuracy for glaucomatous defects in both the superotemporal and inferotemporal regions than with the SD-OCT thickness map (all P values <.05). The average GCL++ (87.6%) and GCL+ (87.5%) thicknesses showed significantly greater AUROC for myopic POAG than GCIPL thickness from SD-OCT (83.8%, all P values <.05). CONCLUSIONS: In myopic eyes, the SS-OCT wide-field map exhibited better accuracy for glaucomatous defect and greater diagnostic power for POAG than SD-OCT outcomes. This result might have been due to SS-OCT's wider scan and measurement area.

Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.

Full article

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Classification:

8.1 Myopia (Part of: 8 Refractive errors in relation to glaucoma)
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)

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