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http://dx.doi.org/10.5762/KAIS.2013.14.6.2839

The Correlation of Tear Break-Up Time according to Corneal Refractive Power  

Jeong, Youn Hong (Department of Visual Optics, Kyungdong University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.6, 2013 , pp. 2839-2843 More about this Journal
Abstract
In this study, the relation between the corneal refractive power and the tear break-up time(TBUT) was analyzed. The results can be effectively used in eye clinics and served as the reference on wearing the contact lenses. We had measured the radius of the corneal of university students who are in the range of 21 to 27 year-old and who don't have eye disease. The corneal refractive power was calculated by using the radius of the corneal. And TBUT is the time when the mire image is distorted first time. The relation between the corneal refractive power and TBUT in right eye was a linear as 'y=37.921-0.610x', in which the larger the refractive power of the cornea is, the shorter TBUT is(negative relationship; r=-0.462, p=0.010). The relation in left eye was also a negatively linear as 'y=41.894-0.695x'(r=-0.509, p=0.004). Consequently, in both eyes the corneal refractive power and TBUT have a negative correlation when myopia is a high. It is possible to predict TBUT, which is necessary in deciding on wear of contact lenses, by measuring the corneal radius of subjects.
Keywords
Corneal radius; Corneal refractive power; Keratometer; Tear break-up time; Visible iris diameter;
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Times Cited By KSCI : 2  (Citation Analysis)
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