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Satoshi Morooka, Masanori Hangai, Masayuki Nukada, Noriko Nakano, Kohei Takayama, Yugo Kimura, Tadamichi Akagi, Hanako Ohashi Ikeda, Atsushi Nonaka, Nagahisa Yoshimura; Wide 3-Dimensional Macular Ganglion Cell Complex Imaging with Spectral-Domain Optical Coherence Tomography in Glaucoma. Invest. Ophthalmol. Vis. Sci. 2012;53(8):4805-4812. doi: https://doi.org/10.1167/iovs.12-9870.
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© ARVO (1962-2015); The Authors (2016-present)
To determine whether measurement of ganglion cell complex (GCC) thickness over a wide area (8-mm diameter) can improve the glaucoma-discriminating ability of spectral-domain optical coherence tomography (SD-OCT) compared to that in the standard macular area (6-mm diameter).
Ninety-three subjects were enrolled, including 46 healthy eyes of 46 volunteers and 47 eyes of 47 glaucoma patients (23 eyes with preperimetric glaucoma [PPG] and 24 eyes with early glaucoma [EG]). All patients underwent SD-OCT raster scanning over a 9 mm × 9 mm square area centered on the fovea. Areas under the receiver operating characteristic curves (AROCs) were compared between wide sector (1–8-mm ring) and standard-size sector (1–6-mm ring) charts.
AROCs for average GCC thickness in the wide chart were significantly greater than those of the standard chart in eyes with PPG (0.928 vs. 0.891; P = 0.038), EG (0.912 vs. 0.861; P = 0.003), and both (0.920 vs. 0.876; P = 0.004). Overall, the AROCs of regional GCC thicknesses were nearly comparable between the middle ring (4–6 mm) and outer ring (6–8 mm). Coefficients of variation were 0.68% and 0.97% in the standard and wide sector charts, respectively, in eyes with PPG, and 0.45% and 0.72% in the standard and wide sector charts, respectively, in eyes with EG.
Addition of the GCC thickness outside the macula to the standard macular GCC thickness significantly increased the glaucoma-discriminating ability of SD-OCT.
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