Adaptation to progressive lenses by presbyopes

Tara L. Alvarez, Sang Han, Crystal Kania, Eun Kim, Oscar Tsang, John L. Semmlow, Bérangère Granger-Donetti, Claude Pedrono

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

6 Scopus citations

Abstract

All humans will become presbyopic as part of the aging process where the eye losses the ability to focus at different depths. Progressive additive lenses (PALs) allow a person to focus on objects located at near versus far by combing lenses of different strengths within the same spectacle. However, it is unknown why some patients easily adapt to wearing these lenses while others struggle and complain of vertigo, swim, and nausea as well as experience difficulties with balance. Sixteen presbyopes (nine who adapted to PALs and seven who had tried but could not adapt) participated in this study. This research investigated vergence dynamics and its adaptation using a short-term motor learning experiment to asses the ability to adapt. Vergence dynamics were on average faster and the ability to change vergence dynamics was also greater for presbyopes who adapted to progressive lenses compared to those who could not. Data suggest that vergence dynamics and its adaptation may be used to predict which patients will easily adapt to progressive lenses and discern those who will have difficulty.

Original languageEnglish (US)
Title of host publication2009 4th International IEEE/EMBS Conference on Neural Engineering, NER '09
Pages143-146
Number of pages4
DOIs
StatePublished - 2009
Event2009 4th International IEEE/EMBS Conference on Neural Engineering, NER '09 - Antalya, Turkey
Duration: Apr 29 2009May 2 2009

Publication series

Name2009 4th International IEEE/EMBS Conference on Neural Engineering, NER '09

Other

Other2009 4th International IEEE/EMBS Conference on Neural Engineering, NER '09
CountryTurkey
CityAntalya
Period4/29/095/2/09

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Clinical Neurology
  • Neuroscience(all)

Keywords

  • Oculomotor control
  • Presbyopia
  • Vergence

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