The Study of Tear Film Break Up Time(BUT) in Soft Contact Lens Wearer.

Hyun, Bynug Kee; Park, Myung Sae; Kim, Jae Myung

Original Article

Journal of the Korean Ophthalmological Society 1990;31(2):149-154.
Published online February 1, 1990.

The Study of Tear Film Break Up Time(BUT) in Soft Contact Lens Wearer.

Bynug Kee Hyun, Myung Sae Park, Jae Myung Kim

Departemtn of Ophthalmology, Kyung Hee University, Seoul, Korea.

연성 콘택트 렌즈 착용자의 Tear Film Break Up Time 에 대한 고찰

현병기(Byung Kee Hyun),박명세(Myung Sae Park),김재명(Jae Myung Kim)

Abstract

Soft Contact Lenses(SCL) are used widely instead of glasses among young female, especially university students, for cosmetic purpose. Usually Shirmer test has been used to evaluate the tear production state however more objective method is the tear film break up time. Authors evaluated the effect of soft contact lenses on BUT. We selected 40 femalse wearing on Hyper-Thin soft contact lenses, and One Soflens(Baush and Lomb) as soft contact lens wearing group and 30 females without no evidence of systemic disease or ocular disease affecting on tear production as normal control group. And authors studied mean value of BUT at each group, difference of BUT between 2 groups and finally evaluated the BUT change accord ing to duration of wearing. The results were as follows. 1. The mean value of tear film break up time(BUT) was 8.64 +/- 3.91 seconds and 11.12 +/- 4.94 seconds in soft contact lens wearing group and normal control group respectively. 2. There was a statistically significant difference of BUT between each group(P<0.05). 3. There was statistically significant difference of BUT between more than 4 years of soft contact lens wearing group and less than 3 years of wearing gorup(P<0.05).

Key Words: soft contact lens;BUT;Tear