真实轴长 (RAL):一种用于近视管理的新胆管包括胆管的度量
Guangyao Ran1,2,3,4,5, Zhiwei Luo6,2,3,4,5, Xiaoning Li1,2,3,4,5
1Aier Academy of Ophthalmology, Central South University, Changsha, China.
Scientific reports
|December 10, 2025
概括
一种新的测量方法,即真实轴长 (RAL),通过从角膜测量到角膜,准确地评估眼睛的生长. 这种方法与标准工具进行了验证,显示了监测儿童近视控制的潜力.
科学领域:
- 眼科医生 眼科 眼科
- 生物医学工程 生物医学工程
- 视光学测量 视光学测量 视光学测量
背景情况:
- 传统的轴长度 (AL) 测量可能会受到胸膜厚度的影响.
- 准确的眼部生物测量对于了解眼睛生长和治疗近视至关重要.
- 扫描源OCT血管学 (OCTA) 为眼部结构提供了先进的成像功能.
研究的目的:
- 为了引入和验证一个新的测量,真实轴长 (RAL),使用OCTA.
- 为了比较RAL测量与从IOL Master 700获得的常规AL.
- 在非近视儿童和青少年中建立特定年龄的RAL参考值.
主要方法:
- 一项涉及1833名视力正常的中国儿童 (5-17岁) 的横截面研究.
- 测量包括AL,中角膜厚度,前腔深度,水深度和透镜厚度使用VG 200D (OCTA) 和IOL Master 700.
- 类内相关系数 (ICC) 和布兰德-阿尔特曼分析评估了设备一致性;RAL值在不同年龄和性别组中进行了分析.
主要成果:
- 平均RAL (24.04毫米) 显著超过平均AL (23.52毫米) 约0.5毫米.
- 在标准生物识别参数 (ICC = 0.956) 方面,VG 200D与IOL Master 700有很强的一致性.
- 在5岁时,RAL测量显示了男孩和女孩之间的差异,在17岁时缩小了.
结论:
- 由OCTA测量的真实轴长度 (RAL) 提供了对眼睛生长的有价值,客观的评估.
- RAL测量显示与IOL Master 700的高度一致.
- RAL可以作为评估眼部发育和近视控制策略有效性的关键参数.
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