Motor learning discerning progressive lens acceptability in presbyopes

Crystal Kania, Oscar Tsang, Eun Kim, Bérangère Granger-Donnetti, Tara L. Alvarez

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


The objective of this study is to determine whether the magnitude of a subject's peak velocity is related to a subject's ability to adapt to progressive lenses. Our presumption is that patients fully adapted to progressive additive lenses (PALs) are better motor learners, allowing them to modify their vergence dynamics more readily than patients who could not adapt to PALs. The experiment aims to compare the eye movement dynamic behavior from a 4° double step stimulus which is a 4° step followed by a subsequent 4° step after a 200 msec delay. Eight presbyopes who wear PALs daily and seven presbyopes who could not adapt to PALs participated. The results show that presbyopes adapted to PALs have a significantly greater dynamic ratio of the first to second peak velocity from the two high velocity components stimulated from the double step. This behavior may in part be due to better motor learning abilities.

Original languageEnglish (US)
Title of host publicationNEBEC 2009 - Proceedings of the IEEE 35th Annual Northeast Bioengineering Conference
StatePublished - 2009
EventIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009 - Boston, MA, United States
Duration: Apr 3 2009Apr 5 2009

Publication series

NameBioengineering, Proceedings of the Northeast Conference
ISSN (Print)1071-121X


OtherIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009
CountryUnited States
CityBoston, MA

All Science Journal Classification (ASJC) codes

  • Bioengineering

Fingerprint Dive into the research topics of 'Motor learning discerning progressive lens acceptability in presbyopes'. Together they form a unique fingerprint.

Cite this