Department of Ophthalmology, Antwerp University Hospital, Edegem, Belgium; Department of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland.
Department of Ophthalmology, Antwerp University Hospital, Edegem, Belgium; Department of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
Cont Lens Anterior Eye. 2020 Feb;43(1):21-25. doi: 10.1016/j.clae.2018.10.021. Epub 2018 Nov 2.
To in-vivo quantify differences in anterior scleral shape between myopes and emmetropes and relate them with axial length and refractive power.
Forty-two participants (84 eyes) were included in this study. Twenty-five participants were categorised as emmetropes and seventeen participants were categorised as myopes. The refractive state was measured monocularly using a closed window autorefractometer. Axial length was acquired using an optical biometer and topographical data was obtained using a non-contact corneo-scleral topographer. Anterior scleral asymmetry was calculated from 3-dimensional data using a custom-made algorithm and further correlated to axial length and refractive power. Right and left eyes were analysed independently.
The anterior scleral shape was highly correlated with axial length (OS and OD: R = 0.76, p < 0.001) and moderately correlated with refractive power (OS: R = 0.48, OD: R = 0.53, both p < 0.01). The more myopic the eye, the less asymmetric the anterior sclera.
Both axial length and refractive power are well correlated with the anterior scleral shape. The refractive state of each patient should therefore be taken into consideration when analysing scleral shape when planning certain treatments or surgeries and when fitting scleral contact lenses.
在活体中量化近视者和正视者前巩膜形状的差异，并将其与眼轴长度和屈光力相关联。
本研究纳入了 42 名参与者（84 只眼）。25 名参与者被归类为正视者，17 名参与者被归类为近视者。使用封闭式自动折射仪对单眼的屈光状态进行测量。使用光学生物测量仪获取眼轴长度，使用非接触式角膜地形图仪获取角膜巩膜地形图数据。使用定制的算法从三维数据中计算前巩膜不对称性，并进一步与眼轴长度和屈光力相关联。右眼和左眼分别进行分析。
前巩膜形状与眼轴长度高度相关（OS 和 OD：R=0.76，p<0.001），与屈光力中度相关（OS：R=0.48，OD：R=0.53，均 p<0.01）。眼睛越近视，前巩膜的不对称性越小。
眼轴长度和屈光力都与前巩膜形状密切相关。因此，在计划某些治疗或手术以及拟合巩膜接触镜时，分析巩膜形状时应考虑每个患者的屈光状态。
