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Filters on computer displays -- effects on legibility, performance and comfort.

The hypothesis is that using a contrast-enhancing filter (CEF) on a computer display will improve display legibility, reading speed and visual comfort. Twenty subjects performed reading tasks, letter counting tasks, and legibility measurements on eight display conditions: a cathode ray tube (CRT) an...

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Published in:Behaviour & Information Technology Vol. 22; no. 6; pp. 427 - 434
Main Authors: Sheedy JE, Subbaram MV, Hayes JR
Format: research tables/charts Journal Article
Published: Taylor & Francis Ltd Nov/Dec2003
Online Access:View this record in EBSCOhost
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      dt: Nov/Dec2003
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      pub: Taylor & Francis Ltd
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        atl: Filters on computer displays -- effects on legibility, performance and comfort.
      aug:
        au:
          Sheedy JE
          Subbaram MV
          Hayes JR
        affil: Ohio State University, College of Optometry, 320 West Tenth Ave, PO Box 182342, Columbus, OH 43218; sheedy.2@osu.edu
      sug:
        subj:
          Computer Peripherals
          Occupational Health
          Vision
          Light
          Visual Analog Scaling
          Scales
          Repeated Measures
          Data Analysis Software
          Adult
          Human
          Adult: 19-44 years
      ab: The hypothesis is that using a contrast-enhancing filter (CEF) on a computer display will improve display legibility, reading speed and visual comfort. Twenty subjects performed reading tasks, letter counting tasks, and legibility measurements on eight display conditions: a cathode ray tube (CRT) and liquid crystal display (LCD) matched for size and luminance - each at high luminance, with two different CEFs and a lower luminance to match one of the CEFs. The CEFs decreased both luminance and contrast when applied to the displays with the brightness set high, although the contrast was better with the filters compared to a matched luminance display without a filter. The legibility measurements support the positive effect of the CEFs due to improved contrast but the larger negative effect due to reduction in luminance results in a net loss of legibility. Performance on the reading and letter counting tasks was not improved with the CEFs.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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