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.
Similar content being viewed by others
References
van den Berg TJTP. Importance of pathological intraocular light scatter for visual disability. Doc Ophthalm, 1986; 61: 327–333.
Vos JJ. Disability glare: A state of the art report. CIE - Journal 1984; 3(2): 39–53.
van den Berg TJTP, IJspeert JK, de Waard PWT. Dependence of intraocular straylight on pigmentation and light transmission through the ocular wall. Vision Res 1991; 31 (in press).
Holladay JT, van Dijk H, Lang A, Portney V, Willis TR, Sun R, Oksman HC. Optical performance of multifocal intraocular lenses. J Cataract Ref Surg 1990; 16: 413–422.
Campbell FW, Green DC. Optical and retinal factors affecting visual resolution. J. Physiol 1965; 181: 576–593.
Kaufman HE. Multifocal intraocular lenses: better or worse? Am J Ophthalm 1990; 110: 424–425.
Witmer FK, van de Brom HJB, Kooyman AC, Blanksma LJ. Intraocular light scattering in pseudophakia. Doc Ophthalm 1989; 72: 335–340.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Van Den Berg, T.J.T.P., Ijspeert, J.K. Retinal contrast loss with non-monofocal IOLs. Doc Ophthalmol 78, 161–167 (1991). https://doi.org/10.1007/BF00165676
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00165676