A dual optic accommodating foldable intraocular lens.
OBJECTIVE
To design an accommodating intraocular lens with extended accommodative range that can be adapted to current standard phacoemulsification and endocapsular implantation technique.


METHODS
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.


CONCLUSIONS
A dual optic intraocular lens design can increase the optical effect of a given displacement and suggests improvements for accommodating intraocular lenses.
McLeod
S D
SD
Department of Ophthalmology, University of California San Francisco, San Francisco, CA 94143, USA. smcleod@itsa.ucsf.edu
Portney
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Ting
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D000065:Accommodation, Ocular / Q000502:physiology; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000295:instrumentation; D007910:Lenses, Intraocular / Q000592:standards*; D055095:Optics and Photonics; D018918:Phacoemulsification / Q000295:instrumentation; D011474:Prosthesis Design