Through focus point spread function and modulus transfer function for multifocal lenses

Paige Sawyers; Jim Schwiegerling

doi:10.1117/12.2632772

3 October 2022 Through focus point spread function and modulus transfer function for multifocal lenses

Paige Sawyers, Jim Schwiegerling

Proceedings Volume 12217, Current Developments in Lens Design and Optical Engineering XXIII; 1221703 (2022) https://doi.org/10.1117/12.2632772
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

A system for measuring the through-focus point spread function (PSF) for intra-ocular lenses (IOLs) and converting to modulation transfer function (MTF) is developed. The system consists of a light source, eye model, IOL, magnifier, and CCD camera. By capturing the resulting image through a range of focus positions, the PSF is found and converted to MTF. The MTF displays differences in the depth of focus for monofocal, multifocal, and extended depth of focus (EDOF) IOLs. As multifocal and EDOF IOLs evolve, using the MTF to predict the image quality is vital to implanting the most appropriate lens in the patient’s eyes.

Conference Presentation

Citation Download Citation

Paige Sawyers and Jim Schwiegerling "Through focus point spread function and modulus transfer function for multifocal lenses", Proc. SPIE 12217, Current Developments in Lens Design and Optical Engineering XXIII, 1221703 (3 October 2022); https://doi.org/10.1117/12.2632772

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