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KMID : 1159320150170040431
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Korean Journal of Vision Science
2015 Volume.17 No. 4 p.431 ~ p.441
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Effect of Colour Background for Visual Discomfort and Reading
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Park Hyung-Min
Sung Duk-Yong
Chu Byoung-Sun
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Abstract
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Purpose: This study aimed to investigate the effectiveness of different colour background of computer monitor for level of discomfort with pattern glare and reading speed.
Methods: Twenty participants (mean age 26±4.68) with no ocular complication and more than 6/6 visual acuity included. Computer simulated program for pattern glare was used to measure the discomfort level using 5-point rating scale (higher score refers to a higher level of discomfort) under four conditions, white background of computer monitor, coloured background of computer monitor which was selected by the participant’s choice, white light of desk lamp and coloured light of desk lamp which was also selected by participant’s choice out of 12 colours. Reading speed was measured by counting Korean word correctly read per minute(wpm) and excluding the omitted line, words and wrong order. Reading speed was measured twice under two different conditions, one with a white background of computer monitor and another with colour background.
Results: There was a statistically significant difference for discomfort level for different viewing conditions (p<0.05), with highest discomfort score with computer monitor with white background (3.6 points) and lowest discomfort score with coloured desk lamp(2.47 points). There was statistically significant mean difference for word per minute (p＜0.05) that the number of word correctly read with a white background was 123.7±26.2 wpm, while that of with color background
selected by participants was 132.4±26.4 wpm.
Conclusions: This study showed that using colour background for reading may be beneficial for reducing visual discomfort and improving reading performance which was similarly confirmed by other researchers. Also, having coloured light of desk lamp may also be applied for long time studying to reduce visual stress. In addition, carefully chosen colour background or desk lamp rather than random colour can enhance reading ability.
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KEYWORD
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Reading speed, Visual stress, Meares-irlen syndrome, Colour bacbackground, Color to comfort test
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