Risk Factors for Corneal Endothelial Cell Loss in Patients with Pseudoexfoliation Syndrome

Area of Science:

• Ophthalmology
• Corneal Science
• Cell Biology

Background:

• Pseudoexfoliation (PEX) syndrome is a common condition associated with increased risk of glaucoma and cataracts.
• Corneal endothelial cell density (ECD) is a critical indicator of corneal health and function.
• Understanding factors affecting ECD in PEX patients is crucial for predicting and managing potential complications.

Purpose of the Study:

• To investigate and compare corneal endothelial cell density (ECD) between patients with pseudoexfoliation (PEX) syndrome and a control group.
• To identify clinical factors associated with lower ECD in PEX patients.

Main Methods:

• A comparative study involving 51 eyes of 41 phakic patients with PEX (PEX group) and 201 eyes of 117 patients with age-related cataracts (control group).
• Multivariate analyses were used to examine clinical factors including ECD, central corneal thickness (CCT), anterior chamber depth (ACD), anti-glaucoma eye drop usage, and PEX severity.
• PEX severity was categorized as Mild, Moderate, or Severe.

Main Results:

• Mean ECD was significantly lower in the PEX group (2,548 ± 409 cells/mm²) compared to the control group (2,757 ± 282 cells/mm²; P = 0.02).
• Multivariate analysis revealed a significant association between PEX severity and lower ECD (P < 0.01).
• Accumulation of PEX materials was identified as a contributing factor to early corneal endothelial decompensation.

Conclusions:

• PEX syndrome is associated with a reduction in corneal endothelial cell density.
• The severity of pseudoexfoliation directly correlates with lower corneal endothelial cell density.
• PEX material deposition accelerates corneal endothelial decompensation, highlighting the need for monitoring in PEX patients.