Br J Ophthalmol 87:1083-1085 doi:10.1136/bjo.87.9.1083
  • Clinical science
    • Scientific reports

A dual optic accommodating foldable intraocular lens

  1. S D McLeod1,
  2. V Portney2,
  3. A Ting3
  1. 1Department of Ophthalmology, University of California San Francisco, San Francisco, CA, USA
  2. 2Tustin, CA, USA
  3. 3Visiogen Inc, Irvine, CA, USA
  1. Correspondence to: Stephen D McLeod, MD, University of California San Francisco, Department of Ophthalmology, 10 Koret Way, K-301, San Francisco, CA 94143, USA; smcleod{at}
  • Accepted 26 January 2003


Aim: To design an accommodating intraocular lens with extended accommodative range that can be adapted to current standard phacoemulsification and endocapsular implantation technique.

Method: Ray tracing analysis and lens design; cadaver eye implantation.

Results: Ray tracing analysis indicated that axial movement of an exaggerated converging anterior optic linked by spring loaded haptics to a compensatory static diverging posterior optic produced greater change in conjugation power of the eye compared to axial movement of a single optic lens. A dual optic one piece foldable silicone lens was constructed and implanted via a 4 mm corneal incision into the capsular bag of two cadaver eyes.

Conclusion: A dual optic intraocular lens design can increase the optical effect of a given displacement and suggests improvements for accommodating intraocular lenses.


  • All authors have a financial interest in Visiogen Inc and the device described herein.

  • Presented in part at the annual meeting of the American Society for Cataract and Refractive Surgeons, Philadelphia, 2002.