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Related Concept Videos

Vision01:24

Vision

53.3K
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.
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Visual Agnosia01:12

Visual Agnosia

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Visual System01:26

Visual System

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
581
Parallel Processing01:20

Parallel Processing

151
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
151
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

651
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.
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Prosopagnosia01:24

Prosopagnosia

165
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
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Related Experiment Video

Updated: Jul 1, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

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Understanding and identifying visual field progression.

Allison M McKendrick1,2,3, Andrew Turpin2,4

  • 1Discipline of Optometry, School of Allied Health, University of Western Australia, Perth, Western Australia, Australia.

Clinical & Experimental Optometry
|March 11, 2024
PubMed
Summary
This summary is machine-generated.

This review covers methods for detecting visual field sensitivity changes in glaucoma patients. It offers advice for clinicians to improve data collection for better progression prediction.

Keywords:
Gaucomaperimetryvisual field metricsvisual field progression

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Related Experiment Videos

Last Updated: Jul 1, 2025

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Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
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Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing

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Area of Science:

  • Ophthalmology
  • Medical Technology

Background:

  • Glaucoma management relies on detecting visual field sensitivity deterioration.
  • Accurate progression assessment is crucial for timely diagnosis and treatment.
  • Current clinical devices and literature methods are evolving.

Purpose of the Study:

  • To review current methods for assessing visual field progression in glaucoma.
  • To discuss recent advances in perimetric data analysis.
  • To provide guidance for clinicians on optimizing perimetric data collection.

Main Methods:

  • Literature review of clinical devices and research studies.
  • Analysis of methods for assessing visual field progression.
  • Discussion of data collection best practices.

Main Results:

  • Overview of established and emerging progression detection techniques.
  • Identification of factors influencing the accuracy of progression prediction.
  • Recommendations for improving perimetric data quality.

Conclusions:

  • Accurate detection of visual field changes is vital for glaucoma care.
  • Optimizing data collection enhances the reliability of progression analysis.
  • Future directions include digital health and personalized perimetry.