title: Computer-specific spectacle lens design preference of presbyopic operators.
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.
authors.affiliation: School of Optometry, University of Missouri-St. Louis 63121-4499.
authors.forename: W G
authors.initials: WG
authors.lastname: Bachman
mesh_terms: D000328:Adult; D001248:Asthenopia / Q000517:prevention & control; D001416:Back Pain / Q000517:prevention & control; D016288:Computer Terminals; D004867:Equipment Design; D005139:Eyeglasses; D005260:Female; D006261:Headache / Q000517:prevention & control; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck; D009784:Occupational Diseases / Q000517:prevention & control; D010146:Pain / Q000517:prevention & control; D011305:Presbyopia / Q000534:rehabilitation*; D013997:Time Factors