Visual Neurorestoration: An Expert Review of Current Strategies for Restoring Vision in Humans

Area of Science:

• Neuroscience
• Ophthalmology
• Biomedical Engineering

Background:

• Visual impairment affects nearly half a billion people globally.
• Current treatments improve some eye conditions but have limited strategies for retinopathies, optic nerve damage, and visual pathway disorders.
• The visual system's complexity necessitates innovative approaches beyond traditional methods.

Purpose of the Study:

• To review current literature on visual neurorestoration strategies.
• To explore advancements in cellular therapeutics, genetic therapies, optogenetics, neuroprosthetics, neuromodulation, and whole-eye transplantation.
• To highlight the need for multidisciplinary efforts in restoring functional vision.

Main Methods:

• Review of scientific literature on visual neurorestoration.
• Analysis of emerging therapeutic modalities including cellular replacement, gene therapy, optogenetics, and neuroprosthetics.
• Examination of recent developments in whole-eye transplantation and non-invasive neuromodulation.

Main Results:

• Novel treatments like stem cell therapy, gene editing, and optogenetics show promise for retinal damage.
• Retinal and central nervous system neuroprosthetics are in early development stages.
• Whole-eye transplantation demonstrated feasibility, with future research focusing on axonal regeneration.

Conclusions:

• Current visual neurorestoration methods offer modest improvements, necessitating further development.
• Integrating cellular therapies, genetic engineering, transplantation, and neuromodulation is key to restoring functional vision.
• A collaborative, multidisciplinary approach is essential for addressing complex vision loss pathologies.