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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Computer-specific spectacle lens design preference of presbyopic operators.
    Author: Bachman WG.
    Journal: J Occup Med; 1992 Oct; 34(10):1023-7. PubMed ID: 1403191.
    Abstract:
    Twenty-nine presbyopic subjects who spent at least 20 hours a week at a video display terminal compared a progressive addition lens designed for this function, with another commonly prescribed task-specific lens. Each of the paired lens types was worn for 4 weeks and then compared directly for 1 week. A statistically significant (P < .05) portion of the subjects (76%) preferred the task-specific lenses overall. It also was preferred more frequently for each feature compared, although the difference was statistically significant (P < .05) only for utility of distance vision. Both of the task-specific designs contributed to symptomatic relief. The presence of a distance-clear zone and the absence of lens discontinuities most likely account for user preference for the task-specific lenses. That preference suggests improved performance for presbyopic computer users wearing task-specific progressive addition lenses.
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