Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

961
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...
961
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

886
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...
886
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

2.1K
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...
2.1K
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

748
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...
748
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.8K
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,...
6.8K
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

3.5K
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...
3.5K

You might also read

Related Articles

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

Sort by
Same author

Selective targeting of a histone-like silencer Sfx to the R6K conjugal transfer operon.

Nucleic acids research·2026
Same author

Exploring engagement with a web-based self-directed psychoeducational program for advanced cancer patients and their caregivers (iFOCUS): A sub study analysis of the DIAdIC trial.

Palliative medicine·2026
Same author

Selective targeting of a histone-like silencer Sfx to the R6K conjugal transfer operon.

bioRxiv : the preprint server for biology·2026
Same author

Diagnostic Utility of Paton's Folds and Quantitative OCT Metrics in Pediatric Papilledema.

Ophthalmology·2026
Same author

Standardizing RNA-seq Analysis of Fungal Pathogens Using BRC-Analytics and Agentic AI: A <i>Candidozyma auris</i> Case Study.

bioRxiv : the preprint server for biology·2026
Same author

Enhancing Early Medical Education Through Patient Engagement: Creation of a Toolkit Informed by Experts by Experience.

The clinical teacher·2025
Same journal

Concussion in contact sport: risks, detection, & prevention.

Seminars in pediatric neurology·2026
Same journal

A multidisciplinary, symptom-targeted approach to rehabilitation in pediatric concussion.

Seminars in pediatric neurology·2026
Same journal

Pediatric concussion beyond sports: Falls, play, and everyday activities.

Seminars in pediatric neurology·2026
Same journal

Return-to-school protocols in pediatric concussion care.

Seminars in pediatric neurology·2026
Same journal

Improving concussion recognition in youth sports: the role of parents, coaches, and community education.

Seminars in pediatric neurology·2026
Same journal

Concussion pathophysiology: From biomechanical insult to clinical phenotype - or is injury truly the beginning?

Seminars in pediatric neurology·2026
See all related articles

Related Experiment Video

Updated: Oct 14, 2025

Author Spotlight: Minimally Invasive Relief for Occipital Neuralgia at the Nuchal Line
04:06

Author Spotlight: Minimally Invasive Relief for Occipital Neuralgia at the Nuchal Line

Published on: September 13, 2024

2.4K

Ocular Causes for Headache.

Elena Nguyen1, Hilliary Inger1, Catherine Jordan1

  • 1Nationwide Children's Hospital, Department of Ophthalmology, Columbus, OH.

Seminars in Pediatric Neurology
|November 9, 2021
PubMed
Summary
This summary is machine-generated.

Ocular headaches, including those from refractive error, convergence insufficiency, and accommodative spasm, often occur frontally after near work. Treatments vary from glasses for refractive errors to prisms or exercises for other conditions.

More Related Videos

A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects
07:00

A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects

Published on: August 14, 2013

13.2K
Dural Stimulation and Periorbital von Frey Testing in Mice As a Preclinical Model of Headache
05:40

Dural Stimulation and Periorbital von Frey Testing in Mice As a Preclinical Model of Headache

Published on: July 29, 2021

8.6K

Related Experiment Videos

Last Updated: Oct 14, 2025

Author Spotlight: Minimally Invasive Relief for Occipital Neuralgia at the Nuchal Line
04:06

Author Spotlight: Minimally Invasive Relief for Occipital Neuralgia at the Nuchal Line

Published on: September 13, 2024

2.4K
A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects
07:00

A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects

Published on: August 14, 2013

13.2K
Dural Stimulation and Periorbital von Frey Testing in Mice As a Preclinical Model of Headache
05:40

Dural Stimulation and Periorbital von Frey Testing in Mice As a Preclinical Model of Headache

Published on: July 29, 2021

8.6K

Area of Science:

  • Ophthalmology
  • Neurology
  • Optometry

Background:

  • Headaches can stem from various ocular conditions, including refractive errors, convergence insufficiency (CI), and accommodative spasm (AS).
  • These headaches are typically frontally localized, worsen with increased near work, and manifest towards the end of the day.
  • Conditions like CI and AS can present with diplopia and strabismus and may be linked to head trauma or systemic disorders.

Purpose of the Study:

  • To review the characteristics and management of headaches originating from ocular causes.
  • To differentiate between headaches associated with refractive error (HARE) and those related to CI or AS.

Main Methods:

  • Literature review and synthesis of existing research on ocular headache etiologies.
  • Analysis of clinical presentations, associated symptoms, and treatment modalities.

Main Results:

  • Headaches associated with refractive error (HARE) are more severe with higher refractive error magnitudes.
  • Convergence insufficiency (CI) and accommodative spasm (AS) can lead to diplopia and strabismus.
  • Treatment for HARE involves corrective lenses, while CI and AS may require prisms, eye drops, surgery, or orthoptic exercises.

Conclusions:

  • Ocular conditions are significant contributors to headache disorders.
  • Accurate diagnosis is crucial for effective management, distinguishing between refractive errors and binocular vision anomalies.
  • Tailored therapeutic strategies, ranging from optical correction to vision therapy, are essential for alleviating ocular headaches.