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

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.7K
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,...
6.7K
Visual Agnosia01:12

Visual Agnosia

441
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...
441
Visual System01:26

Visual System

870
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...
870
Vision01:24

Vision

56.1K
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.
56.1K
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

7.8K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
7.8K

You might also read

Related Articles

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

Sort by
Same author

A new oculomotor model demystifies "Remarkable Saccades".

Vision research·2026
Same author

Interactions-guided blueprint of acetylcholinesterase binding: A review on structural and molecular determinants.

Chemico-biological interactions·2026
Same author

Screening of hepatitis C virus in dried plasma spots among people who inject drugs and attending syringe exchange programme in Delhi, India.

The Indian journal of medical research·2026
Same author

Application of transport of intensity and phase equations for quantitative phase imaging using a non-recursive method.

Applied optics·2026
Same author

Frequency-domain filtering for feature enhancement using recursive transport of intensity and phase equations.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same author

Design of Multi-Epitope DIVA-Compatible Vaccine Candidate Against Canine Parvovirus 2.

Journal of molecular recognition : JMR·2026
Same journal

Vowel acoustic parameters in speech assessment and rehabilitation of minimally verbal and speech-motor-impaired autistic children: a narrative review.

Frontiers in human neuroscience·2026
Same journal

Toward clinical translation of TMS-EEG: an integrative review of multidimensional neurophysiological measures.

Frontiers in human neuroscience·2026
Same journal

The causal efficacy of consciousness: a neuroscientific analysis and explanation.

Frontiers in human neuroscience·2026
Same journal

Temporal-oscillatory entrainment: a multi-timescale framework for rhythmic coordination from neural to social frequencies.

Frontiers in human neuroscience·2026
Same journal

Role of AQP4 in ameliorating heat stress-induced cellular injury in a cell line model through active heat acclimation.

Frontiers in human neuroscience·2026
Same journal

Correction: Cognitive state monitoring for neuroadaptive information visualization.

Frontiers in human neuroscience·2026
See all related articles

Related Experiment Video

Updated: Oct 11, 2025

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
09:47

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

17.7K

Higher Visual Function Deficits in Children With Cerebral Visual Impairment and Good Visual Acuity.

Arvind Chandna1,2, Saeideh Ghahghaei1, Susan Foster2

  • 1The Smith-Kettlewell Eye Research Institute, San Francisco, CA, United States.

Frontiers in Human Neuroscience
|December 6, 2021
PubMed
Summary
This summary is machine-generated.

Cerebral Visual Impairment (CVI) in children with good vision can be identified using the Higher Visual Function Question Inventory (HVFQI-51). This tool detects higher visual function deficits (HVFDs) and distinguishes CVI from typical development.

Keywords:
cerebral visual impairment (CVI)childrengood visual acuityhigher visual function deficitslow visionquestionnairescreeningstructured question inventory

More Related Videos

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

591
Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
05:10

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

3.3K

Related Experiment Videos

Last Updated: Oct 11, 2025

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
09:47

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

17.7K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

591
Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
05:10

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

3.3K

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Developmental Pediatrics

Background:

  • Cerebral Visual Impairment (CVI) is often diagnosed through observed behavioral deficits, despite normal visual acuity.
  • Higher Visual Function Deficits (HVFDs) in CVI can be missed due to unimpaired visual acuity, leading to underdiagnosis and lack of understanding of visual perceptual difficulties.
  • Accurate identification of HVFDs is crucial for understanding and managing CVI in children.

Purpose of the Study:

  • To determine the spectrum of HVFDs in children with CVI compared to typically developing children using a structured questionnaire.
  • To evaluate the efficacy of the Higher Visual Function Question Inventory (HVFQI-51) in detecting HVFDs in children with CVI.
  • To identify a potential screening tool for HVFDs in children with CVI.

Main Methods:

  • A prospective study administered the 51-question Higher Visual Function Question Inventory (HVFQI-51) to children with a history suggestive of brain damage and a CVI diagnosis, and to typically developing children.
  • The study analyzed the spectrum of HVFDs, including the impact of an 'not applicable' response option.
  • A subset of 11 questions (Top-11) was proposed as a potential screening tool.

Main Results:

  • The HVFQI-51 effectively detected a range of HVFDs in children with CVI, even those with good visual acuity, and clearly distinguished them from typically developing children.
  • HVFDs in the study group were predominantly linked to dorsal stream visual processing dysfunction, with individual variations observed.
  • The inclusion of the 'not applicable' response provided a more accurate representation of each child's overall disability.

Conclusions:

  • The HVFQI-51 is a valuable tool for identifying HVFDs in children with CVI and differentiating them from typical development.
  • The proposed Top-11 subset shows potential as a screening tool for initial assessment of HVFDs and measuring CVI-related impairment, requiring further validation.
  • Understanding HVFDs is essential for comprehensive CVI diagnosis and management.