Purpose: The aims of the study were (1) to stage early glaucomatous field defects following Hodapp-Parrish-Anderson (HPA) criteria in an ocular hypertension (OH) cohort with 7-year follow-up and (2) to recognize the limitation(s) of this staging system. Design: A retrospective review of subjects with OH. Methods: A retrospective review of the visual fields of 183 OH subjects was conducted. A Humphrey Field Analyzer was used for standard automated perimetry in all these participants, tested once every half year for 7 years or until the onset of conversion (study end point).
Only nerve fiber bundle glaucomatous abnormalities were identified as per the Ocular Hypertension Treatment Study guideline and considered as converted glaucoma cases from OH. Subsequently, those fields were classified as possible, probable, and definite glaucoma cases following HPA criteria. This study also…
