相关实验视频
Updated: Jun 28, 2025

05:36
Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
669
与折射误差相关的双边视力障碍的患病率 - 苏格兰NHS苏格兰学校前视力查计划See4School的调查结果
Lee Pentland1, Miriam Louise Conway2
1Ninewells Hospital Tayside, Dundee, UK.
Eye (London, England)
|April 10, 2024
概括
未被发现的折射误差影响到2.42%的苏格兰学龄前儿童,导致视力受损. 早期学前视力查对于识别折射误差和预防长期教育和健康问题至关重要.
科学领域:
- 眼科医生 眼科 眼科
- 公共卫生 公共卫生
- 儿科光学测量 儿科光学测量
背景情况:
- 苏格兰的See4School计划是一项全国性的学前视力查计划.
- 视力查的主要目的通常是检测眼盲,而不是双边视力障碍.
- 双边视力障碍虽然不常通过查检测到,但可以显著影响孩子的教育和日常生活.
研究的目的:
- 通过苏格兰学龄前视力查计划检测到的与折射误差相关的双边视力障碍的患病率.
- 评估See4School倡议在识别远视障碍之外的视力障碍方面的有效性.
主要方法:
- 对苏格兰 (2013-2016) 匿名视力查转诊数据的回顾性分析.
- 视力查包括拥挤的logMAR测试和其他骨科评估.
- 数据包括141,237名接受查评估的儿童.
主要成果:
- 与折射误差相关的双边视力损伤 (≥0.3LogMAR) 的患病率在1.47%至2.42%之间.
- 在141,237名查儿童中,有27,010名 (19.12%) 儿童被转诊进行进一步的诊断测试.
- 查计划成功地确定了显著的视力障碍儿童的显著百分比.
结论:
- 在苏格兰,高达2.42%的学前儿童可能由于未检测到的折射误差,视力比驾驶标准 (6/12) 差.
- 童年早期视力下降可能会对教育,健康和社会结果产生负面影响.
- 这项研究强调了学前视力查对于检测导致双边视力障碍的折射误差的重要性.
相关概念视频
Photoreceptors and Visual Pathways
6.0K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.0K
Focusing of Light in the Eye
2.7K
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...
2.7K

