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Updated: Apr 22, 2026

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

Past, present, future: a review on visual prostheses.

P Werginz¹, F Rattay

¹Institute for Analysis and Scientific Computing Vienna University of Technology, Vienna, Austria - frank.rattay@tuwien.ac.at.

|October 11, 2014

Summary

Visual implants like retinal implants offer hope for restoring sight. Future advancements aim to overcome current limitations for better object recognition and reading abilities.

Area of Science:

Ophthalmology
Neuroscience
Biomedical Engineering

Background:

Review of visual implant history, current status, and future potential.
Exploration of retinal implants, optic nerve, thalamus, and visual cortex stimulation.

Purpose of the Study:

To present the historic background, current status, and future prospects of visual implants.
To discuss achieved milestones and obstacles in visual restoration technologies.

Main Methods:

Review of existing literature and clinical studies on visual implants.
Analysis of current limitations in retinal implants, including electrode count and activation focality.

Main Results:

Milestones achieved include improved object recognition and letter reading.

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Retinal implants are currently preferred but face challenges with electrode density and neuronal activation precision.

Optogenetic approaches show promise for high temporal and spatial accuracy in retinal neuron activation.

Conclusions:

Significant progress in visual implants offers hope for future breakthroughs.
Overcoming challenges in electrode number and focal activation is crucial for higher quality visual percepts.
Future research should focus on maximizing the use of the optic pathway and achieving focal activation of functionally distinct pathways.