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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.
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Related Experiment Video

Updated: Mar 14, 2026

Minimally-invasive Technique for Injection into Rat Optic Nerve
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[From optic nerve regeneration to visual function recovery: challenges and prospects].

Y H Zhuo1, Q Zhang1, Y Q Li1

  • 1Zhongshan Ophthalmic Center, Sun Yat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology Visual Science, Guangzhou 510060, China.

[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|March 12, 2026
PubMed
Summary

Restoring vision after optic nerve injury requires advanced strategies for axon regeneration and functional recovery. This research explores new methods for nerve repair and clinical translation to improve visual outcomes.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Regenerative Medicine

Background:

  • Optic nerve injury presents significant challenges for axon regeneration and visual function recovery.
  • Research has advanced from basic axon regrowth to complex goals like long-distance regeneration, targeted reinnervation, and functional restoration.

Purpose of the Study:

  • To discuss strategies for accurate circuit repair after optic nerve injury.
  • To explore the role of developmental mechanisms, neural activity modulation, and neurotrophic factors in regeneration.
  • To highlight the potential of multi-omics technologies in understanding regeneration.

Main Methods:

  • Review of current strategies for optic nerve regeneration.
  • Discussion of developmental guidance mechanisms, neural activity modulation, and neurotrophic factors.
  • Exploration of high-throughput multi-omics technologies for deciphering regulatory networks.

Main Results:

  • Strategies discussed include reactivating developmental guidance, modulating neural activity, and using neurotrophic factors.
  • High-throughput multi-omics technologies offer insights into regeneration regulatory networks.
  • Key challenges include optimizing gene/drug delivery and developing large-animal models for clinical translation.

Conclusions:

  • Achieving substantial visual functional recovery necessitates advancements in regenerative strategies.
  • Optimizing delivery systems and utilizing relevant animal models are crucial for clinical translation.
  • A critical pathway toward visual recovery involves integrating regenerative approaches and addressing clinical challenges.