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சுருக்கம்

Swept Source Optical Coherence Tomography Compared to Ultrasound and Biomicroscopy for Diagnosis of Posterior Vitreous Detachment

Marlene D Wang*

Background: Biomicroscopy, B-scan ultrasound imaging, and SD-OCT are all modalities used to characterize a Posterior Vitreous Detachment (PVD). Our objective is to assess the precision of the diagnosis of PVD by SS-OCT.

Methods: This prospective observational study examines ninety-five eyes of forty-nine patients with biomicroscopy, Bscan ultrasound, and SS-OCT for the presence or absence of a complete PVD. All SS-OCT images were reviewed by two retina specialists (RWSC, ZM). All three diagnostic methods were evaluated for agreement by Cohen’s kappa statistic.

Results: The inter-rater reliability between retina specialists reading the SS-OCT images was 97.9% (k=0.957). Agreement on PVD status between SS-OCT and biomicroscopy was 85.3% (k=0.711). Agreement between SS-OCT and B-scan ultrasound was 83.2% (k=0.667). Agreement between B-scan ultrasound and biomicroscopy was 87.4% (k=0.743).

Conclusion: For the diagnosis of complete PVD, SS-OCT allows for high reproducibility and agreement between graders.