Predicting the glaucomatous central 10 degrees visual field from optical coherence tomography using deep learning and tensor regression.

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Abstract

To predict the visual field (VF) of glaucoma patients within the central 10 degrees from optical coherence tomography (OCT) measurements using deep learning and tensor regression.
cross-sectional study METHOD: Humphrey 10-2 VFs and OCT measurements were carried out in 505 eyes of 304 glaucoma patients and 86 eyes of 43 normal subjects. VF sensitivity at each test point was predicted from OCT-measured thicknesses of macular ganglion cell layer + inner plexiform layer, retinal nerve fiber layer, and outer segment + retinal pigment epithelium. Two convolutional neural network (CNN) models were generated: (1) ‘CNN-PR’ which simply connects the output of the CNN to each VF test point; (2) ‘CNN-TR’ which connects the output of the CNN to each VF test point using tensor regression. Prediction performance was assessed using fivefold cross-validation through the root mean squared error (RMSE). For comparison, RMSE values were also calculated using multiple linear regression (MLR) and support vector regression (SVR). In addition, the absolute prediction error for predicting mean sensitivity in the whole VF was analyzed.
RMSE with the CNN-TR model averaged 6.32 ± 3.76 (mean ± standard deviation) dB. Significantly (p <0.05) larger RMSEs were obtained with other models: CNN-PR (6.76 ± 3.86 dB), SVR (7.18 ± 3.87 dB) and MLR (8.56 ± 3.69 dB). The absolute mean prediction error for the whole VF was 2.72 ± 2.60 dB with the CNN-TR model.
The Humphrey 10-2 VF can be predicted from OCT-measured retinal layer thicknesses using deep learning and tensor regression.
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