Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

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...

Accessory Structures of the Eye

Accessory Structures of the Eye

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...

Glaucoma: Overview

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...

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...

Photoreceptors and Visual Pathways

Photoreceptors and Visual Pathways

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, whereas...

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Improvised mother-in-child aspiration with a multipurpose catheter for refractory coronary high thrombus burden: a case report.

Quantitative imaging in medicine and surgery·2026

Same author

Structural Modification and Development of <i>N</i>-(1,2,3,4-Tetrahydro-3-isoquinolinylmethyl)benzamide, BPR1M492, as a Potent and Rapid-Onset Opioid Analgesic with Reduced Withdrawal Symptoms.

Journal of medicinal chemistry·2026

Same author

Three-dimensional assessment of posterior polymorphous corneal dystrophy with swept-source optical coherence tomography.

Quantitative imaging in medicine and surgery·2026

Same author

Increased PRSS56 expression is a causal factor and therapeutic target for human axial high myopia.

Cell research·2026

Same author

Case Report: Rapid progression of inflammation-driven coronary artery lesions in a normolipidemic patient with ANCA-associated vasculitis complicated by Stanford type A aortic dissection.

Frontiers in immunology·2026

Same author

Efficacy and safety of Shexiang Tongxin pill for coronary slow flow in angina patients.

NPJ cardiovascular health·2026

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Dynamic wavefront aberrations and visual acuity in normal and dry eyes.

Yan Wang¹, Jianjiang Xu, Xinghuai Sun

¹Shanghai Eye and ENT Hospital, Fudan University, Shanghai, China.

Clinical & Experimental Optometry

|May 27, 2009

Summary

Dry eye disease causes greater instability in dynamic visual acuity and wavefront aberrations compared to normal eyes. This instability, particularly in visual acuity, is linked to blink rate in dry eye patients.

More Related Videos

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Motion-Acuity Test for Visual Field Acuity Measurement with Motion-Defined Shapes

Motion-Acuity Test for Visual Field Acuity Measurement with Motion-Defined Shapes

Published on: February 23, 2024

Related Experiment Videos

Last Updated: Jun 22, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Motion-Acuity Test for Visual Field Acuity Measurement with Motion-Defined Shapes

Motion-Acuity Test for Visual Field Acuity Measurement with Motion-Defined Shapes

Published on: February 23, 2024

Area of Science:

Ophthalmology
Optometry
Vision Science

Background:

Dynamic visual function is crucial for daily activities.
Understanding ocular surface dynamics is key to managing visual disturbances.
Dry eye disease is a common condition affecting ocular surface integrity and visual quality.

Purpose of the Study:

To investigate the dynamic properties of wavefront aberrations and visual acuity.
To compare these dynamic properties between normal and dry eyes.
To assess the individual variability and potential influencing factors of these dynamic changes.

Main Methods:

Employed a Hartmann-Shack wavefront sensor in multi-file mode to capture dynamic wavefront aberrations over 45 seconds.
Utilized a multi-functional visual acuity (VA) tester for dynamic VA measurements over 150 seconds.
Quantified instability using the standard deviation (RMS or VA) of measurements over the testing period.

Main Results:

Both wavefront aberrations and visual acuity exhibited significant dynamic changes and individual variability.
Dry eye patients demonstrated greater instability in higher-order wavefront aberrations and visual acuity compared to normal subjects.
A significant correlation was found between visual acuity instability and blink rate in the dry eye group.

Conclusions:

Dynamic changes in wavefront aberrations and visual acuity are highly individualized.
Dry eyes exhibit less stability in dynamic visual function compared to normal eyes.
Tear-film dynamics likely influence visual stability, with blink rate being a key factor for dry eye patients.