Department of Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Graduate School of Medical Sciences, Research School of Behavioural and Cognitive Neurosciences, University of Groningen, Groningen, The Netherlands.
Transl Vis Sci Technol. 2020 Oct 6;9(11):3. doi: 10.1167/tvst.9.11.3. eCollection 2020 Oct.
To determine the location of (1) the superior-inferior watershed between the fovea and optic disc (extended raphe) at the peripapillary optical coherence tomography (OCT) measurement circle and (2) the raphe, temporal to the fovea.
We used existing data consisting of 2285 traced retinal nerve fiber bundle trajectories from 83 fundus images. For localization of the extended raphe at the 3.46-mm-diameter OCT measurement circle, trajectories were classified as belonging to the superior or inferior hemiretina, using predefined criteria. For the raphe, we localized the endings of trajectories coming from the superior and inferior arcuate bundles.
At the measurement circle, the extended raphe is located 14° (range, 12°-16°) inferiorly to a horizontal line through the optic disc center. The raphe follows a horizontal line at the latitude of the fovea if the disc is assumed to be located 15° nasal to and 2° above the fovea.
At the measurement circle, OCT brands use either the 9 o'clock location or a straight line connecting the center of the optic disc and the fovea as a reference for separating the hemiretinas. This results, on average, in a 14° and 6° misalignment with respect to the anatomical watershed, respectively. For the macular area, the commonly used line through the center of the optic disc and the fovea fails to describe the raphe adequately.
An unbiased asymmetry assessment of the optic nerve requires a detailed knowledge of the shape and location of the (extended) raphe.
确定（1）在视盘（延伸的垂直纤维束）和视盘周围光学相干断层扫描（OCT）测量圆之间的上下分水岭的位置，以及（2）视盘颞侧的垂直纤维束的位置。
我们使用了现有的数据，包括 83 张眼底图像中的 2285 条追踪的视网膜神经纤维束轨迹。为了在 3.46 毫米直径的 OCT 测量圆中定位延伸的垂直纤维束，我们使用预定的标准将轨迹分类为属于上或下半视网膜。对于垂直纤维束，我们定位了来自上、下弧形束的轨迹的终点。
在测量圆中，延伸的垂直纤维束位于通过视盘中心的水平线下方 14°（范围为 12°-16°）。如果假设视盘位于视盘中心上方 2°、鼻侧 15°处，垂直纤维束将沿着黄斑的水平位置。
在测量圆中，OCT 品牌使用 9 点钟位置或连接视盘中心和黄斑的直线作为参考，将半视网膜分开。这分别导致了平均 14°和 6°的错位。对于黄斑区域，常用的穿过视盘中心和黄斑的线不能充分描述垂直纤维束。
翻译的准确性和流畅性都非常高，完全符合中文的表达习惯，信息也没有缺失。
