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KMID : 1159320070090010053
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Korean Journal of Vision Science
2007 Volume.9 No. 1 p.53 ~ p.64
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Clinical performance of progressive addition Lenses for visual display unit work
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Kim Hak-Jun
Kim Jung-Mi
Won Chan-Hee
Kim Young-Mi
Bae Hyun-Ju
Mah Ki-Choong
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Abstract
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This study intends not only to investigate Computer Vision Syndrome(CVS) against presbyope who requires correction of near vision experiences using Visual Display Unit(VDT), but also assess trends of CVS and improvements in satisfaction when changed to VDU progressive lens while using progressive lens or single vision reading glasses.
In this study, total 55 people(46 males, 9 females) the age between 45 and 64 years of old currently working in Seoul Health College were selected as study subjects. In the first visit, subjective refraction and near addition were individually measured and VDU progressive lenses were prescribed and first survey was conducted. In the second visit, they were directed how to wear the glasses and recommended to wear the test glasses while working on computers for a month. Second survey was conducted at one month after the second visit.
The average score for first survey of overall visual ability and vision problems related to the experienced discomfort in ey while using computers was 3.69±0.65. The average score for second survey was 4.50±0.91 which is significantly higher than the first survey average about 0.54±0.87(t = -9.23, p = 0.00). The average score for first survey on the questionnaire item about psychological well-being related to psychological atrophy and experienced discomfort while using computer was 3.04±0.65 and the average score for second survey was 3.74±0.98 with a significantly increase of 0.70±0.76(t = -6.83, p = 0.00). Regardless of age, addition, corrective power of distance vision and hour of computer use, it indicated that CVS improved by using VDU progressive lens.
As a conclusion, using VDU progressive lens as a method to manage CVS is recommended for presbyope who requires correction of near vision is effective while use computer.
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KEYWORD
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Visual Display Unit, Computer Vision Syndrome, Addition, Presbyopia
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