A Model to Explain the Effect of Soft Lens Design Specifications on Movement

Key Points

• The aim is to explain how contact lens design specifications influence lens movement.
• Development of a theoretical model to describe lens movement.
• Clinical evidence is used to support the model's claims.
• Analysis of the interrelation between lens thickness, sagittal depth, and diameter.
• Demonstrated a clear relationship between lens thickness and required base curves.
• Found that fewer base curves are necessary with reduced lens thickness.
• Illustrated the impact of diameter and sagittal depth on lens movement.