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Abstract #86316 Published in IGR 21-2
Usefulness of data augmentation for visual field trend analyses in patients with glaucoma
Asaoka R; Murata H; Matsuura M; Fujino Y; Miki A; Tanito M; Mizoue S; Mori K; Suzuki K; Yamashita T; Kashiwagi K; Shoji NBritish Journal of Ophthalmology 2020; 104: 1697-1703
AIM: To investigate the usefulness of data augmentation in visual field (VF) trend analyses in patients with glaucoma. METHOD: This study included 6380 VFs from 638 eyes of 417 patients with open-angle glaucoma. Various affine transformations were applied to augment the VF data: (1) rotation, (2) scaling, (3) vertical and horizontal shift and (4) a combination of these different transformations. Using pointwise linear regression (PLR), the total deviation (TD) values of a patient's 10th VF were predicted using TD values from shorter VF series (from first to third VFs (VF1-3) to first to ninth VFs (VF1-9)) with and without VF data augmentation, and the root mean squared error (RMSE) was calculated. RESULTS: With PLR, mean RMSE without VF augmentation averaged from 3.95 (VF1-3) to 19.01 (VF1-9) dB. The RMSE was significantly improved by applying the different transformations: (1) rotation (from VF1-3 to VF1-7), (2) scaling (from VF1-3 to VF1-6), (3) vertical and horizontal shifts (from VF1-3 to VF1-4) and (iv) a combination of these (from VF1-3 to VF1-7). Progression rates in VF1-10 had better agreement with those in shorter VF series when a combination of affine transformation was applied. The differences in rates were between 1.9 (VF1-3) and 0.39 (VF1-9) dB if augmentation was used, which was significantly smaller than that observed when augmentation was not applied (from 2.6 with VF1-3 to 0.26 dB with VF1-9). CONCLUSION: It is useful to apply VF data augmentation techniques when predicting future VF progression in glaucoma using PLR, especially with short VF series.
Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan ryoasa0120@mac.com.
Full articleClassification:
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
