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We thank Casas-Llera et al for their interest in our study, the main purpose of which was to determine the level of agreement between the consensus judgment of expert clinicians and Glaucoma Progression Analysis (GPA) software with respect to the determination of whether visual field progression has occurred. In general terms, there are 3 possible GPA results: (1) no progression, (2) possible progression, and (3) likely progression. “Possible progression” is defined by the occurrence of 2 consecutive visual fields that demonstrate significant deterioration in glaucoma change probability maps in ≥3 (Read more...)

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