Laboratory science: Predicting the performance of accommodating intraocular lenses using ray tracing

Arthur Ho, Fabrice Manns, Therese Pham, Jean Marie Parel

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


PURPOSE: To predict and compare the amount of accommodation achievable by pseudophakic accommodating intraocular lenses (IOLs) using optical ray-tracing analysis. SETTING: Computational laboratory. METHODS: Two-element IOLs (2E-IOL, with mobile front or back optical elements) were compared with single-element IOLs (1E-IOL). Modeling using computer-assisted ray tracing of both IOL types assumed lens elements were equiconvex/equiconcave. The 4 possible combinations of configurations representing a wide range of varying positive and negative power (up to +40 diopters [D]) of front and back optical elements were evaluated. RESULTS: The 1E-IOLs offered limited amplitude of accommodation with axial shift (approximately 1.2 D/mm). For 2E-IOLs, configurations with high positive-power front elements returned the best amplitude of accommodation (up to approximately 3.0 D/mm when the front element power was +40 D). CONCLUSIONS: Considering the maximum potential amounts of axial shifts available, 1E-IOLs were predicted to provide 1.0 D of accommodation or less and 2E-IOLs were predicted to provide up to 3.0 D to 4.0 D depending on design configuration and amount of axial shift achievable. Potential issues relating to accommodative aniseikonia and spherical aberration have been identified.

Original languageEnglish (US)
Pages (from-to)129-136
Number of pages8
JournalJournal of cataract and refractive surgery
Issue number1
StatePublished - Jan 2006

ASJC Scopus subject areas

  • Surgery
  • Ophthalmology
  • Sensory Systems


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