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Predictive value of preoperative optical coherence tomography for visual outcome following macular hole surgery:
Wataru Matsumiya1, Sentaro Kusuhara, Tsuyoshi Shimoyama
1Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
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.
