催膜质量对视觉功能的影响
Snježana Kaštelan1, Ksenija Gabrić2, Maša Mikuličić2
1Department of Ophthalmology, Fundamentals of Medical Skills, School of Medicine, University of Zagreb, Clinical Hospital Dubrava, 10 000 Zagreb, Croatia.
Vision (Basel, Switzerland)
|March 27, 2024
概括
闪后模糊时间 (PBBT) 显示出作为干眼疾病 (DED) 的客观查测试的希望. 较短的PBBT和膜分解时间 (TBUT) 与DED症状相关,表明膜不稳定影响视力.
科学领域:
- 眼科医生 眼科 眼科
- 视觉科学 视觉科学 视觉科学
- 生物医学工程 生物医学工程
背景情况:
- 干眼疾病 (DED) 的患病率在全球范围内不断上升,导致眼部不适和视觉障碍.
- 准确的DED诊断是复杂的,通常需要专门的工具.
- 眼膜的不稳定性显著影响视觉功能.
研究的目的:
- 调查催膜不稳定性对视觉功能的影响.
- 评估眼后模糊时间 (PBBT) 作为评估膜稳定性的替代方法.
- 探索 PBBT 与干眼疾病 (DED) 之间的关联.
主要方法:
- 62名受试者被分为DED (n=31) 和对照组 (n=31).
- 通过谢恩问卷和附加问题评估症状.
- 使用Snellen图表测量的闪后模糊时间 (PBBT) 和膜分解时间 (TBUT).
主要成果:
- 在DED和对照组之间平均PBBT和TBUT的显著差异 (p < 0.001).
- 平均PBBT:8.95s (DED) 与14.66s (控制) 相比. 平均TBUT:4.77s (DED) 与7.63s (控制) 相比.
- 在 PBBT 和 TBUT 之间发现了强烈的正相关性 (r = 0.455,p < 0.001).
结论:
- 撕裂膜的稳定性对于光折射和视觉光学质量至关重要.
- 闪后模糊时间 (PBBT) 显示出作为DED的客观临床查工具的潜力.
- PBBT可能为评估DED患者的膜稳定性提供了一个有价值的替代方案.
相关概念视频
Accessory Structures of the Eye
1.5K
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...
1.5K
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


