Epithelial permeability in corneal grafts by fluorophotometry

Area of Science:

• Ophthalmology
• Corneal Research
• Tissue Engineering

Background:

• Penetrating keratoplasty (PKP) is a common procedure for corneal blindness.
• Assessing the functional recovery of corneal epithelium post-PKP is crucial for long-term graft success.
• Epithelial barrier function is vital for maintaining corneal health and transparency.

Purpose of the Study:

• To evaluate the epithelial permeability and functional recovery of corneal grafts one year after PKP.
• To investigate the correlation between epithelial permeability and recipient/donor age.

Main Methods:

• Fluorophotometry was used to measure epithelial permeability to fluorescein in 27 corneal grafts from 23 patients.
• Data were analyzed using multiple linear regression to assess correlations with age.

Main Results:

• Mean epithelial permeability in corneal grafts was not significantly different from normal corneas.
• Epithelial permeability showed a significant positive correlation with recipient age (P < 0.005).
• No significant correlation was found between epithelial permeability and donor age (P > 0.5).

Conclusions:

• Corneal grafts can achieve normal epithelial barrier function one year after penetrating keratoplasty.
• Younger recipients exhibit better recovery of corneal epithelial function compared to older recipients.
• Recipient age is a significant factor influencing epithelial function recovery after PKP.