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Corneal pain and experimental model development.

Tina B McKay1, Yashar Seyed-Razavi2, Chiara E Ghezzi1

  • 1Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA.

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Summary
This summary is machine-generated.

This review explores corneal innervation, focusing on its role in eye protection and pain signaling. It highlights the need for advanced in vitro models to predict ocular damage and pain, reducing animal testing.

Keywords:
CorneaDry eyeNeuropeptidesNociceptionPainTissue engineering

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Tissue Engineering

Background:

  • The cornea's unique properties make it ideal for studying peripheral sensory nerves.
  • Corneal innervation detects environmental stimuli, protecting the eye.
  • Current models for ocular safety testing have limitations, necessitating better in vitro systems.

Purpose of the Study:

  • To review the anatomical and functional roles of corneal innervation.
  • To discuss corneal neuropathies and pain.
  • To evaluate current in vivo and in vitro models for studying corneal pain.

Main Methods:

  • Focus on tissue engineering approaches for in vitro corneal pain models.
  • Integration of appropriate cell types, controlled microenvironments, and high-throughput assays.
  • Analysis of molecular signatures for distinguishing pain triggers.

Main Results:

  • Corneal innervation is crucial for sensory input and ocular protection.
  • Development of in vitro models is essential for predicting ocular damage and pain.
  • Understanding cellular interactions at the ocular surface is key to deciphering pain pathways.

Conclusions:

  • Tissue engineering offers a promising avenue for developing functional human corneal models.
  • Advanced in vitro systems can improve the prediction of ocular pain and chemical exposure effects.
  • Further research will define molecular mechanisms underlying corneal pain and its brain outcomes.