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Abstract #27701 Published in IGR 13-1
Influence of angular width and peripapillary position of localized retinal nerve fiber layer defects on their detection by time-domain optical coherence tomography
Yoo YC; Park KHJapanese Journal of Ophthalmology 2011; 55: 115-122
PURPOSE: To investigate the influence of angular width and peripapillary position of localized retinal nerve fiber layer (RNFL) defects on their detection by the time-domain optical coherence tomography (OCT). METHODS: Fast RNFL Stratus OCT scans were obtained from 186 eyes of 186 newly detected glaucoma patients with only a single, localized RNFL defect in either eye. The RNFL defects were divided into subgroups according to their angular width at 15° intervals and superior or inferior position. In the sector average graph of OCT results, abnormal clock-hour sectors were evaluated at P < 5%. RESULTS: Among 154 eyes included in the final data analysis, mean angular width of localized RNFL defects was 21.82 ± 10.38°, and 108 eyes (70.1%) had an inferiorly located RNFL defect. Localized RNFL defects with an angular width interval of 30° to 45° were more frequently detected by Stratus OCT than those with an angular width of <15° (odds ratio = 30.32, P = 0.001). Inferior RNFL defects were not detected more frequently by Stratus OCT than superior RNFL defects (odds ratio = 1.58, P = 0.24). CONCLUSIONS: Only the angular width of localized RNFL defects had a significant influence on the sensitivity of the time-domain OCT.
Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea, demian7435@gmail.com.
Classification:
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)
