相关实验视频

Updated: Jul 19, 2025

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

在近视控制的隐形眼镜和单视隐形眼镜之间的视觉性能和图像质量的比较

Ding Han¹, Ziyu Zhang¹, Bingqin Li¹

¹Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China.

Contact lens & anterior eye : the journal of the British Contact Lens Association

|August 13, 2023

概括

双聚焦隐形眼镜 (DISC) 提供令人满意的远视,但可能会降低近视质量. 高阶偏差的增加和对比度的降低使得DISC镜头的视觉性能与单视镜头相比较差.

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:

眼睛近视管理是眼睛护理的一个不断增长的领域.
隐形眼镜 (CL) 是一种常见的折射校正方法.
双聚焦CLs的设计是为了改变视觉光学.

研究的目的:

为了比较同心双焦设计的隐形眼镜 (DISC镜头) 与单视 CLs 的视觉性能和图像质量.
为了在近视的中国人群中评估这些镜头.

主要方法:

一项随机的,为期一周的交叉研究,涉及20名近视志愿者 (18-26岁).
参与者同时佩戴DISC镜头和单视觉CL.
评估包括高/低对比度视敏度 (VA),对比度灵敏度 (CS),眼睛高阶偏差 (HOA),斯特雷尔比率和视力质量 (QoV) 问卷.

主要成果:

距离VA不受高或低对比度的DISC镜头的影响.
在VA附近的低对比度在使用DISC镜头时显著降低.
DISC镜头增加了眼睛的HOA,并降低了Strehl比率.
对比度灵敏度受到照明和空间频率的显著影响.
使用DISC镜头的QoV得分更高,这表明视觉性能较差.

结论:

DISC镜头提供了可接受的远距离视觉敏度.
降低对比度灵敏度和增加高阶偏差可能解释了DISC镜头用户报告的视觉性能较差.
进一步研究优化双重焦点的CL设计,以提高整体视觉质量是有必要的.

关键词:

这是一个DISC盘.图像质量图像质量近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视近视觉表现的表现视觉表现单视觉的CLs是一个单视觉的CLs.

更多相关视频

$Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity$ 05:46

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

Published on: September 20, 2024

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia

Published on: September 27, 2024

相关概念视频

Focusing of Light in the Eye

Focusing of Light in the Eye

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...

Angle Closure Glaucoma: Treatment

Angle Closure Glaucoma: Treatment

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...

Open Angle Glaucoma: Treatment

Open Angle Glaucoma: Treatment

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...