随着年龄的增长,眼睛形的变化:一项纵向研究
Jeremy Beesley1, David B Elliott1
1Bradford School of Optometry and Vision Science, University of Bradford, Bradford, UK.
概括
随着年龄的变化,与规则相关的形变化从符合规则的变化到违反规则的变化更有可能涉及斜轴,而不是球形变化. 这些斜视位变化很常见,需要专业的注意才能获得眼镜的处方.
科学领域:
- 眼科医生 眼科 眼科
- 视光学测量 视光学测量 视光学测量
- 视觉科学科学 视觉科学
背景情况:
- 白,一个常见的折射误差,在一个人的一生中发生变化.
- 随着年龄的增长,从符合规则的 (WTR) 转变为违反规则的 (ATR) 隐形眼是一种已知的现象.
- 驱动这种与年龄相关的转变的机制,特别是斜标轴的作用,需要进一步研究.
研究的目的:
- 为了研究与年龄相关的变化在.
- 为了确定从WTR转向ATR形的转变是否由斜形形轴或球形处方介导.
- 为了确定这些形变化发生的年龄范围.
主要方法:
- 来自英国光学诊所的处方数据的回顾性分析.
- 长度评估326名患者 (640只眼睛) 中的形变化,平均时间为20年.
- 对28-69岁患者在第一次记录检查时的处方病史分析.
主要成果:
- 从WTR转变为ATR形的变化是通过斜圆柱轴发生的可能性是球形处方的三倍多 (56对16).
- 在首次检查时28-40岁的患者中,55%的眼睛出现了44岁左右的形变化.
- 36%的眼睛至少有一次处方斜圆柱体,其中78%是短暂的,相比之下,文学流行率为11%-19%.
结论:
- 与年龄相关的从WTR转变为ATR纹症主要涉及斜圆柱轴,而不是球形变化.
- 斜视的高患病率 (36%) 和它的短暂性质需要专业的发展,以准确的眼镜处方.
- 了解这些斜视变化对于解决与新眼镜相关的患者投诉至关重要.
相关概念视频
02:20Longitudinal Research
12.0K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
12.0K
01:27Open Angle Glaucoma: Treatment
474
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
474
01:28Angle Closure Glaucoma: Treatment
555
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
555
01:17Accessory Structures of the Eye
1.6K
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
1.6K
01:16Focusing of Light in the Eye
2.9K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
2.9K