|Document ID (ISN)||61160|
|ISSN - Serial title
||0096-1736 - Journal of Occupational Medicine
|Convention or series no.
||Computer-specific spectacle lens design preference of presbyopic operators
||Oct. 1992, Vol.34, No.10, p.1023-1027. 10 ref.
||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 four weeks and then compared directly for one week. A statistically significant (P<0.05) portion of the subjects (76%) preferred the task-specific lenses overall. It was also preferred more frequently for each feature compared, although the difference was statistically significant (P<0.05) 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.
||presbyopia; spectacle wearers; visual display terminals
||ergonomic evaluation; symptoms
||D - Periodical articles
|Country / State or Province||USA|
||Lighting, colour and vision
|Broad subject area(s)
||Diseases of the eye and vision damage
Visual display terminals (VDTs)