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Related Concept Videos

Visual System01:26

Visual System

566
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...
566
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

627
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.
627

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Updated: Jun 23, 2025

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
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Assistive Systems for Visually Impaired Persons: Challenges and Opportunities for Navigation Assistance.

Gabriel Iluebe Okolo1, Turke Althobaiti2, Naeem Ramzan1

  • 1School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK.

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|June 19, 2024
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Summary

Assistive technologies aid visually impaired individuals in navigation and object detection. This review covers advanced tools and multi-modal solutions for enhanced mobility and safety.

Keywords:
Internet of Things (IoT)artificial intelligencevisually impaired person

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Area of Science:

  • Assistive Technology
  • Human-Computer Interaction
  • Rehabilitation Engineering

Background:

  • Visually impaired individuals face significant mobility and safety challenges.
  • The increasing prevalence of vision impairment necessitates advanced assistive solutions.
  • Existing research focuses on developing technologies to improve daily living for the visually impaired.

Purpose of the Study:

  • To review state-of-the-art assistive technologies for the visually impaired.
  • To evaluate multi-modal mobility assistance solutions for indoor and outdoor environments.
  • To analyze current approaches and provide future recommendations.

Main Methods:

  • Comprehensive literature review of assistive technologies.
  • Evaluation of multi-modal systems for mobility.
  • Analysis of various technological approaches.

Main Results:

  • Identified key assistive technologies, tools, and systems.
  • Assessed the effectiveness of multi-modal solutions in different environments.
  • Provided an analysis of current research trends.

Conclusions:

  • Advanced assistive technologies offer significant potential to improve the quality of life for visually impaired persons.
  • Multi-modal mobility assistance is crucial for comprehensive support.
  • Further research and development are recommended to address remaining challenges.