Retinal contrast loss with non-monofocal IOLs |
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| Authors: | T J T P Van Den Berg J K Ijspeert |
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| Institution: | (1) The Netherlands Ophthalmic Research Institute and Laboratory of Medical Physics and Informatics, University of Amsterdam, The Netherlands;(2) Laboratory for Medical Physics & Informatics, AMC, Meibergdreef 15, 1105 AZ Amsterdam ZO, The Netherlands |
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| Abstract: | Non-monofocal IOLs are designed to give simultaneously sharp images of distant and near objects. This is achieved by means of different focal distances for various portions of the light reaching the eye. As a result, for any given object, one part of the light will be properly focused, while another part is out of focus. This results in a sharp image superposed on a blurred image, causing contrast loss. The retinal contrast loss as a function of spatial frequency is derived in this paper. |
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| Keywords: | Intraocular implant lenses IOL non-monofocal lenses bifocal lenses multifocal lenses diffraction lenses modulation transfer function contrast sensitivity function straylight glare |
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