Related Experiment Video
Updated: Mar 24, 2026

09:47
A Method to Quantify Visual Information Processing in Children Using Eye Tracking
Published on: July 9, 2016
18.3K
Update on Cerebral/Cortical Visual Impairment (CVI) in Children.
Mark J Phillips1,2,3, Melinda Y Chang1,2
1University of Southern California Roski Eye Institute, Los Angeles, CA.
International Ophthalmology Clinics
|March 23, 2026
Summary
Cerebral/cortical visual impairment (CVI) is a brain-based vision disorder affecting children, often linked to premature birth. This overview covers CVI definitions, diagnosis, and management strategies.
Area of Science:
- Neurology
- Ophthalmology
- Pediatrics
Background:
- Cerebral/cortical visual impairment (CVI) results from neurological issues affecting brain visual pathways, not eye problems.
- CVI is a major cause of childhood vision impairment globally, with rising rates linked to improved survival of premature infants.
Purpose of the Study:
- To provide a comprehensive overview of cerebral/cortical visual impairment (CVI).
- To discuss definitions, causes, diagnostic approaches, and management of CVI.
Main Methods:
- Literature review of CVI definitions and etiologies.
- Analysis of diagnostic strategies and functional vision assessment methods.
- Consideration of multidisciplinary management approaches.
Main Results:
- CVI diagnosis requires evaluating neurological and functional vision aspects.
- Multidisciplinary teams are crucial for effective CVI management.
- Current research is advancing understanding and treatment of CVI.
Conclusions:
- Cerebral/cortical visual impairment (CVI) is a complex neurological condition impacting pediatric vision.
- Accurate diagnosis and tailored management are essential for children with CVI.
- Ongoing research promises improved outcomes for CVI patients.
Related Concept Videos
Visual Agnosia
1.6K
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...
1.6K
Photoreceptors and Visual Pathways
10.7K
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,...
10.7K
Vision
61.3K
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.
61.3K
Visual System
2.3K
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...
Once through the pupil, the light passes through the lens, a...
2.3K
Learning Disabilities
730
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
Dyslexia
Dyslexia is a...
730

