Dimensional Stability of Several Hard Contact Lens Materials

Key Points

• The research aims to evaluate how different materials impact the dimensional stability of hard contact lenses when hydrated.
• Lenses were immersed in water for up to 168 hours.
• The back central optic radius of each lens was measured periodically.
• Different lens materials were compared for curvature changes.
• Curvature change during hydration varied depending on the lens material.
• Measurements indicated that some materials showed greater dimensional stability than others.