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Related Concept Videos

Modeling and Similitude01:12

Modeling and Similitude

Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...

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Related Experiment Video

Updated: Jun 6, 2026

Development of an In Vitro Ocular Platform to Test Contact Lenses
08:28

Development of an In Vitro Ocular Platform to Test Contact Lenses

Published on: April 6, 2016

Modeling soft contact lenses in raytrace code.

J E Greivenkamp, J Schwiegerling

    Applied Optics
    |November 12, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study models soft contact lens optical performance using raytrace codes. The surface interferogram feature accurately predicts performance even with lens decentration.

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    Published on: March 8, 2019

    Area of Science:

    • Ophthalmic optics
    • Optical engineering
    • Biomedical engineering

    Background:

    • Accurate modeling of soft contact lens optical performance is crucial for predicting visual outcomes.
    • Lens decentration can significantly impact the effective optical performance of contact lenses.
    • Existing modeling techniques may not fully capture the effects of decentration.

    Purpose of the Study:

    • To investigate the utility of the surface interferogram feature in raytrace codes for modeling soft contact lens optical performance.
    • To specifically evaluate the performance of this method in scenarios involving lens decentration.

    Main Methods:

    • Utilizing raytrace codes with a surface interferogram feature.
    • Defining the contact lens geometry using a thickness data file.
    • Simulating lens decentration by shifting the lens data file relative to a schematic eye model's corneal vertex.

    Main Results:

    • The surface interferogram feature effectively models the optical performance of soft contact lenses.
    • This method accurately predicts performance even when the contact lens is decentered.

    Conclusions:

    • The surface interferogram feature in raytrace codes is a valuable tool for simulating soft contact lens optics.
    • This approach provides reliable optical performance predictions, particularly for decentered lens conditions.