Projection-Resolved Optical Coherence Tomography Angiography of the Peripapillary Retina in Glaucoma.
Am J Ophthalmol
; 207: 99-109, 2019 11.
Article
em En
| MEDLINE
| ID: mdl-31170389
ABSTRACT
PURPOSE:
To detect plexus-specific peripapillary retinal perfusion defects in glaucoma, using projection-resolved optical coherence tomography angiography (PR-OCTA).DESIGN:
Prospective cross-sectional study.METHODS:
One eye each of 45 perimetric glaucoma participants and 37 age-matched normal participants were scanned using 4.5-mm OCTA scans centered on the disc. The PR-OCTA algorithm removed flow projection artifacts in OCT angiograms. Five en face OCTA slabs were analyzed nerve fiber layer plexus (NFLP), ganglion cell layer plexus (GCLP), superficial vascular complex (SVC [NFLP + GCLP]), deep vascular complex (DVC), and all plexi combined. Peripapillary retinal capillary density (CD) and vessel density (VD) were calculated using a reflectance-compensated algorithm.RESULTS:
Focal capillary dropout could be visualized more clearly in the NFLP than in the other slabs. The NFLP, SVC, and all-plexus CD in the glaucoma group were significantly lower (P < 0.001) than in the normal group, but no significant differences in GCLP-CD and DVC-CD appeared between the 2 groups. Both NFLP-CD and SVC-CD had excellent diagnostic accuracy, as measured by the area under the receiver operating characteristic curve (AROC = 0.981 and 0.976), correlation with visual field mean deviation (Pearson r = 0.819 and 0.831), and repeatability (intraclass correlation coefficients = 0.947 and 0.942). Performances of NFLP-VD and SVC-VD were similar to the corresponding CD parameters.CONCLUSIONS:
In this glaucoma group, reduction in perfusion was more pronounced in superficial layers of the peripapillary retina (NFLP and SVC) than in the deeper layers. Reflectance-compensated CD and VD parameters for both NFLP and SVC could be useful in the clinical management of glaucoma.
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Base de dados:
MEDLINE
Assunto principal:
Disco Óptico
/
Células Ganglionares da Retina
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Vasos Retinianos
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Angiofluoresceinografia
/
Glaucoma
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Tomografia de Coerência Óptica
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article