The top formulas for each AL category were as follows: Long Eyes- K-6 (0.356), EVO (0.361), and Kane (0.361), while all but two formulas were statistically better than SRK/T (0.431); Short Eyes- Kane (0.393), EVO (0.402), and K-6 (0.309), while the worst formula was Hoffer Q (0.533).

摘要 目的 分析角膜曲率与短眼轴临界两侧的人工晶状体度数差值的关系.方法 前瞻性研究.对2014年6月至2015年10月在河北医科大学第一医院眼科,①随机收集500只眼角膜正常的成人白内障患者的角膜曲率进行前瞻性研究,将相同角...

眼軸長度，是由眼睛的最表面（角膜），一直量度到眼內「最後端的」感光細胞（視網膜）皮層的距離。 簡單來說，就是我們眼球的大小。 一般成人的眼軸長度，大約是 22 - 25mm。 而近視加深的主要原因，就是由於眼軸變長了。 眼軸長度改變1mm，相等於 2.50 D - 3.00 D 的度數改變。 以住我們說「近視越深，患上眼病的風險越高」，其實並不準確，應該是「眼軸越長，患上眼病的風險越高」。 Mak, C. Y., Yam, J. C., Chen, L. J., Lee, S. M., & Young, A. L. (2018).

There are two significant optical axes of the eye – the optical axis and the visual axis, which are also referred to in literature as the pupillary axis and the line of sight, respectively. The optical axis is composed of an imaginary line perpendicular to the cornea that intersects the center of the entrance pupil. [1]

2025年2月6日 · Corneal curvature (CC) and axial length (AL) are critical anatomic parameters of the eyeball, determining the refractive state of the eyeball and greatly affecting the occurrence and...

2020年7月17日 · An analysis of the studies published in the past 50 years reveals that the Haigis, Hoffer Q, and Holladay 2 formulas are the best options for intraocular lens power prediction in short eyes (<22 mm). In long eyes (>26 mm), the Barrett Universal II, Haigis (with optimized constants), Olsen, and …

2024年1月10日 · We aimed to develop and assess machine learning models to estimate the axial length of young myopic eyes. Linear regression, symbolic regression, gradient boosting and multilayer perceptron models...

短眼轴即眼轴长度小于22 mm，国内对短眼轴在临界值时与角膜曲率的关系研究较少。 本文通过采集角膜正常的白内障患者的角膜曲率进行研究，分析短眼轴临界两侧的人工晶状体度数差值与角膜曲率的关系，为白内障患者人工晶状体度数的选择提供参考。

2018年3月15日 · IOLMaster and Ultrasound have statistically significant differences in AL measurements and IOLP (using LADAS formula) for normal, long eye and short eye. The two instruments agree regarding ACD measurements for the long eye group, but differ for the normal and short eye groups.

2012年7月1日 · The average eye axial length is approximately 23.30 mm. Assuming the central corneal power is the same for each eye at normal axial lengths, for every 1 mm of axial length difference you can anticipate a 3.0 D difference in the refractive error.