Changes in back radius of soft contact lenses when flexed

Area of Science:

• Ophthalmic optics
• Biomaterials science
• Contact lens technology

Background:

• Flexible contact lenses undergo changes in their back surface curvature during use.
• Predicting the optical and physiological effects of these changes is crucial for lens design and patient outcomes.
• Existing models for curvature change require validation with in situ data.

Purpose of the Study:

• To present mathematical hypotheses detailing the change in back surface radius of curvature for flexible contact lenses during flexing.
• To enable the empirical testing of these hypotheses using real-world contact lens data.

Main Methods:

• Formulation of mathematical statements for various hypotheses on contact lens back surface curvature change.
• Development of a framework for testing these hypotheses against in situ optical and physiological data.

Main Results:

• Established mathematical models for flexible contact lens deformation.
• Provided a methodology for validating these models with empirical data.

Conclusions:

• The presented mathematical hypotheses offer a testable framework for understanding contact lens flexing.
• This work facilitates the prediction of both optical and physiological performance of contact lenses in situ.