PURPOSE To determine the normal range of optic canal diameters in the Turkish pediatric population. METHODS Brain, orbital, and maxillofacial computed tomography examinations were evaluated retrospectively. Children with cranial bone disorders affecting the bone structure of the optic canal were excluded from the study. Oblique axial and oblique sagittal multiplanar reformatted images were created in accordance with the axis of the optic canal on both sides, and measurements were taken from the shortest transverse and craniocaudal diameters of the optic canal in these images. RESULTS Two hundred computed tomography examinations were evaluated. One hundred two of the patients were female and the rest were male. Patient ages ranged from 1 to 211 months (mean ± standard deviation: 86.42 ± 65.39 months). There was no significant difference between the transverse and craniocaudal optic canal diameters between sexes (P > .05). Therefore, the analyses were reevaluated in the entire patient series, regardless of sex. No significant correlation was found in the correlation test performed between optic canal diameters according to the age of the patients. No statistically significant difference was observed between the right and left optic canal diameters. CONCLUSIONS The determination of normal values of tissues, structures, and organs that differs with age has an important role in pediatric radiology. The authors believe that the determination of normal optic canal diameters according to certain age groups will meet the needs of daily practice. [J Pediatr Ophthalmol Strabismus. 2021;58(5):319-323.].

中文翻译：

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根据儿童年龄的视神经管直径。

目的 确定土耳其儿科人群中视神经管直径的正常范围。方法回顾性评估脑、眼眶和颌面计算机断层扫描检查。患有影响视神经管骨骼结构的颅骨疾病的儿童被排除在研究之外。根据两侧视神经管的轴创建斜轴和斜矢状多平面重新格式化图像，并从这些图像中视神经管的最短横向和头尾直径进行测量。结果 评估了 200 次计算机断层扫描检查。122 名患者为女性，其余为男性。患者年龄范围为 1 至 211 个月（平均值 ± 标准差：86.42 ± 65.39 个月）。两性之间横向和头尾视神经管直径之间没有显着差异（P > .05）。因此，无论性别如何，都在整个患者系列中重新评估了分析。在根据患者年龄进行的视神经管直径之间的相关性测试中未发现显着相关性。在左右视神经管直径之间没有观察到统计学上的显着差异。结论 确定随年龄不同的组织、结构和器官的正常值在儿科放射学中具有重要作用。作者认为，根据特定年龄组确定正常视神经管直径将满足日常实践的需要。[J Pediatr Ophthalmol 斜视。2021;58(5):319-323.]。