Convergence dynamics as an indicator for progressive addition lens acceptability among presbyopes

Sang J. Han, John L. Semmlow, Bérangère Granger-Donnetti, Tara L. Alvarez

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

1 Scopus citations

Abstract

Presbyopia is a universal vision problem caused by the aging process. Progressive addition lenses (PALs) are a preferred solution; however, some patients can not adapt to the lenses. The acceptability is not well understood. Sixteen presbyopic subjects (9 subjects adapted to progressive lenses (PL) and 7 subjects who could not adapt to progressive lenses (PD) ) participated in a motor learning study. The motor learning experiment recorded baseline and modification responses where the dynamics of the 4° step responses were compared. Results show that both baseline and modified convergence dynamics were significantly greater in PLs compared to PDs. An adaptive neural network (ANN) classification technique using the baseline and modification velocity parameters with a linear classifier resulted in 94% correct classification. Therefore, baseline 4° convergence dynamics and its modification rate may be used as indicators to predict progressive addition lens acceptability among presbyopes.

Original languageEnglish (US)
Title of host publicationNEBEC 2009 - Proceedings of the IEEE 35th Annual Northeast Bioengineering Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781424443628
DOIs
StatePublished - 2009
EventIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009 - Boston, MA, United States
Duration: Apr 3 2009Apr 5 2009

Publication series

NameProceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC
ISSN (Print)1071-121X

Other

OtherIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009
Country/TerritoryUnited States
CityBoston, MA
Period4/3/094/5/09

All Science Journal Classification (ASJC) codes

  • Bioengineering

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