Ex vivo accommodation simulator II - Concept and preliminary results

Klaus Ehrmann, Arthur Ho, Jean-Marie A Parel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A new instrument was developed to simulate the accommodation of excised human and animal crystalline lenses. The sciera is attached to 8 radially arranged translation stages and dissected into 8 segments. Change in accommodation is simulated by pulling and releasing the scleral segments, varying the load on the zonules and the capsular bag. Each translation stage is equipped with a sensitive force transducer for simultaneous recording of load and displacement. Additionally, changes in optical power, lens diameter, lens thickness and lens shape can be observed and quantified while the lens is stretched and released. The sensitivity and accuracy of the instrument was verified using steel springs and elastic bands. Preliminary results from sensitivity testing and instrument calibration are presented.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
EditorsF. Manns, P.G. Soederberg, A. Ho
Pages48-58
Number of pages11
Volume5
Edition3
DOIs
StatePublished - 2004
EventOphthalmic Technologies XIV - San Jose, CA, United States
Duration: Jan 24 2004Jan 27 2004

Other

OtherOphthalmic Technologies XIV
CountryUnited States
CitySan Jose, CA
Period1/24/041/27/04

Fingerprint

Lenses
Simulators
Transducers
Animals
Calibration
Crystalline materials
Steel
Testing

Keywords

  • Accommodation simulation
  • Crystalline lens
  • Lens stretcher
  • Restoring accommodation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ehrmann, K., Ho, A., & Parel, J-M. A. (2004). Ex vivo accommodation simulator II - Concept and preliminary results. In F. Manns, P. G. Soederberg, & A. Ho (Eds.), Progress in Biomedical Optics and Imaging - Proceedings of SPIE (3 ed., Vol. 5, pp. 48-58). [5314-14] https://doi.org/10.1117/12.539111

Ex vivo accommodation simulator II - Concept and preliminary results. / Ehrmann, Klaus; Ho, Arthur; Parel, Jean-Marie A.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. ed. / F. Manns; P.G. Soederberg; A. Ho. Vol. 5 3. ed. 2004. p. 48-58 5314-14.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ehrmann, K, Ho, A & Parel, J-MA 2004, Ex vivo accommodation simulator II - Concept and preliminary results. in F Manns, PG Soederberg & A Ho (eds), Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 3 edn, vol. 5, 5314-14, pp. 48-58, Ophthalmic Technologies XIV, San Jose, CA, United States, 1/24/04. https://doi.org/10.1117/12.539111
Ehrmann K, Ho A, Parel J-MA. Ex vivo accommodation simulator II - Concept and preliminary results. In Manns F, Soederberg PG, Ho A, editors, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 3 ed. Vol. 5. 2004. p. 48-58. 5314-14 https://doi.org/10.1117/12.539111
Ehrmann, Klaus ; Ho, Arthur ; Parel, Jean-Marie A. / Ex vivo accommodation simulator II - Concept and preliminary results. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. editor / F. Manns ; P.G. Soederberg ; A. Ho. Vol. 5 3. ed. 2004. pp. 48-58
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