成年Cynomolgus的球形等价和生物识别参数之间的相关性
Kezhe Chen1, Jian Wu2, Feng Zhao1
1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
Experimental eye research
|July 5, 2023
概括
Cynomolgus子的折射和眼部生物特征与人类相似,轴长,角膜半径和角膜厚度具有相似的差异. 这些发现支持它们作为折射误差研究的动物模型的使用.
科学领域:
- 眼科医生 眼科 眼科
- 灵长类动物研究研究
- 比较生物学的比较生物学
背景情况:
- 了解折射误差分布和影响因素对于开发有效干预至关重要.
- 在生物医学研究中,Cynomolgus子越来越多地被用作模型,因此需要对它们的眼睛参数进行表征.
研究的目的:
- 在Cynomolgus子殖民地中描述折射和眼部生物识别参数的分布.
- 分析影响这些非人类灵长类动物折射状态的因素.
主要方法:
- 一项基于人群的横截面研究,涉及263只成年Cynomolgus (520只眼睛).
- 测量包括眼内压力,旋转折射 (球体等价 - SE),角膜曲率半径 (CRC),前腔深度 (ACD),透镜厚度 (LT),轴长 (AL),中央角膜厚度 (CCT) 和胸膜厚度 (ChT).
- 多重回归分析被用来确定折射和眼部生物识别之间的关联.
主要成果:
- 折射误差的患病率:29.42%的超视, 27.12%的输出眼, 33.27%的轻度至中度近视, 10.19%的高近视. 平均SE为-1.27 ± 3.44 D. 这一值为 -1.27 ± 3.44 D.
- 主要生物识别发现:平均AL为18.76±0.89毫米,平均CRC为5.70±0.22毫米,平均CCT为454.30±32.40微米,平均CHT为188.96±38.19微米.
- 轴长 (AL) 单独解释了SE变异的40.5%;年龄,AL和CRC一起解释了57.5%.
结论:
- 在Cynomolgus子的折射特性和眼部生物量学与人类非常相似.
- 轴长,角膜曲率半径和胸膜厚度表现出与人类相似的变化模式.
- 具有自然发生的折射误差的Cynomolgus子代表了研究折射发育和干预的有价值的动物模型.
相关概念视频
Coefficient of Correlation
6.2K
The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear association between the independent variable x and the dependent variable y.
If you suspect a linear relationship between x and y, then r can measure how strong the linear relationship is.
What the VALUE of r tells us:
The value of r is always between –1 and +1: –1 ≤ r ≤ 1.
The size of the correlation r indicates the...
If you suspect a linear relationship between x and y, then r can measure how strong the linear relationship is.
What the VALUE of r tells us:
The value of r is always between –1 and +1: –1 ≤ r ≤ 1.
The size of the correlation r indicates the...
6.2K
Gauss's Law: Spherical Symmetry
7.6K
A charge distribution has spherical symmetry if the density of charge depends only on the distance from a point in space and not on the direction. In other words, if the system is rotated, it doesn't look different. For instance, if a sphere of radius R is uniformly charged with charge density ρ0, then the distribution has spherical symmetry. On the other hand, if a sphere of radius R is charged so that the top half of the sphere has a uniform charge density ρ1 and the bottom half...
7.6K
Calibration Curves: Correlation Coefficient
1.7K
In a linear calibration curve, there is a value called the calibration coefficient, denoted by 'r,' which measures the strength and the direction of association between two variables. The correlation coefficient value ranges from −1 to +1. A value of +1 indicates a perfect positive linear correlation, −1 denotes a perfect negative correlation, and 0 implies no correlation between the two variables. A positive correlation value establishes that as one variable increases, the...
1.7K
Radius of Gyration of an Area
1.6K
The second moment of area, also known as the moment of inertia of area, is a crucial factor in understanding an object's resistance against bending deformation, or stiffness. To accurately estimate the second moment of area along any axis, one needs to concentrate all areas associated with that object into a thin strip, which should be placed parallel to that particular axis.
1.6K
Spherical Coordinates
10.4K
Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
10.4K


