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Related Concept Videos

Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Sight Distance in a Vertical Curve01:29

Sight Distance in a Vertical Curve

Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
Glaucoma: Overview01:25

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: Treatment01:28

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...
Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

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Related Experiment Video

Updated: May 11, 2026

Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images
12:45

Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images

Published on: August 31, 2022

Tunnel vision.

Terence Valenzuela1, Jarrod Mosier, John Sakles

  • 1Tucson Fire Department, USA. terry@aemrc.arizona.edu

JEMS : a Journal of Emergency Medical Services
|May 1, 2013
PubMed
Summary
This summary is machine-generated.

Video laryngoscopy improves glottis visualization and intubation success rates in emergency settings. This technology is predicted to become the standard for field endotracheal intubation within five years.

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Vision Training Methods for Sports Concussion Mitigation and Management

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Area of Science:

  • Emergency Medicine
  • Anesthesiology
  • Medical Devices

Background:

  • Advanced emergency airway management studies have increased since 2000.
  • Most research focused on operating rooms, ICUs, and EDs.
  • Field studies of video laryngoscopy are emerging.

Purpose of the Study:

  • To review the current literature on video laryngoscopy in emergency airway management.
  • To discuss the benefits and future adoption of video laryngoscopy in pre-hospital settings.

Main Methods:

  • Literature review of studies on video laryngoscopy for endotracheal intubation.
  • Analysis of technological advancements and market trends.

Main Results:

  • Video laryngoscopy offers superior glottis visualization compared to traditional methods.
  • It leads to more successful intubations with fewer attempts.
  • Decreasing costs and specialized EMS devices are facilitating adoption.

Conclusions:

  • Video laryngoscopy enhances endotracheal intubation success in emergency care.
  • It is anticipated to become the preferred method for field intubations within five years.