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M. A. Lagana, D. Compertore, L. Costanza, I. G. Cox; Intraocular Lens Model Eye Based on the Average Presbyopic Human Eye. Invest. Ophthalmol. Vis. Sci. 2008;49(13):3331.
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© ARVO (1962-2015); The Authors (2016-present)
The purpose of this study is to present the design of a new 43D model eye that is geometrically and optically similar to the Liou and Brennan eye model. A comparison is made between the 43D eye model and the ISO 11979-2, Annex C model eye.
The industry-standard Liou and Brennan eye model  was used as the baseline for an average presbyopic eye. The new 43D model eye was designed to be geometrically and optically similar to the Liou-Brennan eye model. Three tests were done to verify the design of the new 43D model eye. First, the total power of the 43D model eye and an ISO 11979-2 eye model were measured and compared to the Liou-Brennan eye model. Second, the spherical aberration (SA) of the 43D model eye and an ISO 11979-2 model eye were also measured. Finally, the expected add power of a simple two zone PMMA bifocal lens was analytically calculated using both model eyes and compared to the Liou-Brennan eye model.
The 43D model eye agrees better with the Liou-Brennan model geometrically and optically than the current ISO 11979-2 model eye.
The new 43 D wetcell is better suited to testing IOL optical performance than the ISO 11979-2 prescribed model eye. Liou H. and Brennan N.A., Anatomically accurate, finite model eye for optical modeling, J. Opt. Soc. Am. A, Vol. 14, No. 8, Aug 1997, 1684-1695.
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