What question did this study set out to answer?

To validate a model that describes how soft contact lens movement is affected by lens specifications.

March 21, 2026

Validation of a Model Describing Soft Lens Movement as a Function of Lens Specification

Key Points

To validate a model that describes how soft contact lens movement is affected by lens specifications.
Fitted 12 subjects with soft contact lenses containing 30% water content.
Varied saggital depth of lenses in five steps while keeping diameter constant.
Executed a second study varying diameter from 12 to 14 mm in five steps.
Applied regression analysis to evaluate the relationship between lens specifications and movement.
Found that lens movement decreases with increased lens thickness.
Observed that reducing lens diameter leads to decreased lens movement.
Detected that flattening the base curve of the lens also resulted in less movement.

Abstract

The authors fitted 12 subjects with 30% water‐content, soft contact lenses. The saggital depth of the lenses was varied in five steps while diameter was held constant. In a second study, diameter was varied from 12 to 14 mm in five steps. Regression analysis was used to analyze the data. Lens movement can be decreased by increasing lens thickness, reducing lens diameter, or flattening the base curve of the lens.

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