Dual optic accommodating

With distance correction, mean ± SD (log MAR) binocular visual acuities of 20/20 or better were observed at intermediate (-0.17 ± 0.08) and near (-0.02 ± 0.1) distances.

CONCLUSION: A dual-optic design linked by spring haptics increases the accommodative effect of axial optic displacement with minimal magnification effect and has promise for improving the performance of accommodative intraocular lenses.

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.

If so, then replacement of the crystalline lens with a lens that responds to ciliary body contraction should restore accommodative function.

Attempts have been made to replace the crystalline lens by refilling the capsular bag with appropriately deformable gels.

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