PURPOSE: To investigate the effects of reproducibility of optical coherence tomography (OCT) measurements and imaging alignment on predictive performance for visual outcome following macular hole (MH) surgery. METHODS: We retrospectively reviewed 50 eyes that underwent MH surgery. Preoperative cross-sectional images through the center of the MH (on-center image) and through an off-center point (off-center image) were obtained from the OCT data. In each image, the following OCT parameters were either measured or calculated: minimum diameter, base diameter, hole height, temporal and nasal arm length, photoreceptor inner segment/outer segment (IS/OS) defect length, the hole form factor, the macular hole index and the tractional hole index. The IS/OS defect area was also measured. RESULTS: The reproducibility of OCT parameter values was moderate to high, and there was a significant difference in the mean measurement values between the on- and off-center images. Predictive values varied between sessions and raters, and only the preoperative photoreceptor IS/OS defect length consistently showed significant correlation with postoperative visual outcome. CONCLUSIONS: Both the reproducibility and imaging alignment might affect the predictive performance of the OCT parameter for postoperative visual outcome following MH surgery. The preoperative photoreceptor IS/OS defect length seems to be the most useful parameter in this regard.
PURPOSE: To investigate the effects of reproducibility of optical coherence tomography (OCT) measurements and imaging alignment on predictive performance for visual outcome following macular hole (MH) surgery. METHODS: We retrospectively reviewed 50 eyes that underwent MH surgery. Preoperative cross-sectional images through the center of the MH (on-center image) and through an off-center point (off-center image) were obtained from the OCT data. In each image, the following OCT parameters were either measured or calculated: minimum diameter, base diameter, hole height, temporal and nasal arm length, photoreceptor inner segment/outer segment (IS/OS) defect length, the hole form factor, the macular hole index and the tractional hole index. The IS/OS defect area was also measured. RESULTS: The reproducibility of OCT parameter values was moderate to high, and there was a significant difference in the mean measurement values between the on- and off-center images. Predictive values varied between sessions and raters, and only the preoperative photoreceptor IS/OS defect length consistently showed significant correlation with postoperative visual outcome. CONCLUSIONS: Both the reproducibility and imaging alignment might affect the predictive performance of the OCT parameter for postoperative visual outcome following MH surgery. The preoperative photoreceptor IS/OS defect length seems to be the most useful parameter in this regard.
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Authors: Nitish Mehta; Fabio Lavinsky; Ryan Larochelle; Carl Rebhun; Nihaal B Mehta; Rebecca L Yanovsky; Michael N Cohen; Gregory D Lee; Vaidehi Dedania; Hiroshi Ishikawa; Gadi Wollstein; Joel S Schuman; Nadia Waheed; Yasha Modi Journal: Retina Date: 2021-01-01 Impact factor: 3.975