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KMID : 1159320100120010065
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Korean Journal of Vision Science
2010 Volume.12 No. 1 p.65 ~ p.73
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Study on the Comparison Between Contact Lens Wear and BUT Value
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Sung A-Young
Kim Tae-Hun
Ye Ki-Hun
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Abstract
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Purpose: In this study, we measured the average Tear Film Break-Up Times using the Tear Film Break-Up Time (BUT) test, which is used as a method for diagnosing dry eye and evaluating tear films. We compared BUT test results between contact lens wearers and non-wearers.
Methods: We checked the BUT values of 155 adults (310 eyes) in twenties to forties who didn’t have any ophthalmic diseases that could affect the quantity of tear condition.
Results: The male average value is 12.585±3.999 seconds, and the female average value is 9.761±3.339 seconds. Males have a higher average BUT value, but this tends to decrease for older men. Our findings showed that the BUT of contact lens wearer is 10.516±3.244 seconds and that of non-wearer is 12.198±4.158 seconds(p < 0.05).
Conclusions: The average BUT value has decreased when compared to prior research. This BUT value decrease can be judged by the decrease of the stability of the tear film.
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KEYWORD
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break up time test, contact Lenses, dry eye, tear film
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