Explore the implications of scleral lens wear on corneal changes and visual acuity in keratoconus patients, highlighting critical findings from a year-long study.
This study evaluates the impact of scleral lens (SL) wear on corneal morphology and visual performance in keratoconus patients. Findings indicate that while SL wear induces specific corneal changes, visual acuity remains stable, supporting the use of SLs as a viable long-term vision correction option.
Background
Understanding the effects of scleral lenses on corneal structure is crucial for managing keratoconus, a condition characterized by corneal irregularity. Scleral lenses are increasingly used for visual rehabilitation in these patients, but their influence on corneal thickness and curvature can affect clinical outcomes. Monitoring these changes is essential for optimizing patient care and ensuring visual stability.
Data Highlights
Group
Corneal Thickness Change
Curvature Change
Visual Acuity
KC Group
-1.30% (central thinning)
Inferior steepening, superior flattening
Stable
KC-ICRS Group
+3.98% (superior quadrant)
Central flattening, peripheral steepening
Stable
Key Findings
SL wear induced a 3.98% increase in corneal thickness in the KC-ICRS group.
In the KC group, a 1.30% reduction in central corneal thickness was observed after 12 months.
High-contrast visual acuity remained stable across all visits in both groups.
Curvature analysis showed differing effects on anterior corneal curvature between KC and KC-ICRS groups.
Long-term SL wear resulted in measurable corneal morphological changes without adversely affecting visual acuity.
Clinical Implications
Practitioners should consider the individualized fitting of scleral lenses and monitor corneal topography before and after lens wear. Understanding the potential transient visual changes following lens removal can enhance patient satisfaction and inform clinical decisions.
Conclusion
The study underscores the safety and efficacy of scleral lenses for long-term vision correction in keratoconus, highlighting the need for ongoing monitoring of corneal changes.
