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Related Experiment Video

Updated: Jun 15, 2026

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

Published on: February 23, 2018

[Long-term experience of a pseudo-accommodative lens].

F Seidensticker¹, M Schaumberger, M Ulbig

¹Universitätsaugenklinik München, Centrum für refraktive Therapie, München. florian.seidensticker@med.unimuenchen.de

Klinische Monatsblatter Fur Augenheilkunde

|March 11, 2010

Summary

The 1CU intraocular lens (IOL) shows stable but insufficient accommodative movement for presbyopic correction over five years. Long-term outcomes reveal limited functional accommodation despite pilocarpine stimulation.

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Last Updated: Jun 15, 2026

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

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Published on: March 8, 2019

Area of Science:

Ophthalmology
Biomedical Engineering
Optics

Context:

Cataract surgery involves intraocular lens (IOL) implantation to restore vision.
Accommodative intraocular lenses aim to mimic the natural eye's focusing ability.
Evaluating the long-term performance of new IOL designs is crucial for clinical adoption.

Purpose:

To assess the long-term clinical outcomes and objective accommodative dynamics of the 1CU posterior chamber intraocular lens (IOL).
To evaluate pseudophakic accommodation and pseudo-accommodation in eyes implanted with the 1CU IOL.
To investigate the influence of laser capsulotomy on pseudophakic accommodation.

Summary:

A retrospective study included 26 eyes with 1CU IOLs, examining accommodative response to pilocarpine and cyclopentolate.
Over a mean follow-up of 50.8 months, a stable anterior shift of the IOL reflex was observed (-0.49 +/- 0.27 mm) under pilocarpine stimulation (p < 0.001).
Pseudo-accommodation averaged 1.5 diopters, and Nd:YAG laser capsulotomy did not significantly alter IOL reflex movement.

Impact:

The 1CU IOL demonstrates stable anterior-posterior movement over extended periods.
The observed accommodative shift is insufficient to provide full presbyopic correction.
Findings guide the development of more effective accommodating intraocular lenses.