Original Article

The Influence of Contact Lens Wearing on Tear Film

Kyu Lyong Choi, Min Soo Park, Jung Sook Ahn
Author Information & Copyright
Department of Ophthalmology, College of Medicine, Ewha Womans University, Korea.

Copyright ⓒ 1994. Ewha Womans University School of Medicine. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Dec 31, 1994


Clinically, the diagnostic method of dry eye and adaptation of contact lens wearing have been the slit lamp examination, tear film break up time(BUT) measurement and Schirmer test. There have been many reports that Schirmer test and BUT measurement can be influenced by may factors, especially the mothods of measuring it. So the question of their repeatability and reproducibility has not yet been solved.

We studied the influence of contact lens wearing on the tear film phenol red thread test between contact lens wearers and non-wearers.

The results as follows:

1) The mean value measured by the PRT method was 13.92±7.68mm in right eye, 15.03±7.68mm in right eye, 21.48±6.30mm in left eye among the contact lens-non wearing group.

2) There was statistically significant decreased value of PRT in the contact lens wearing group.

3) There was not statistically significant difference between contact lens type, duration of contact lens wearing, duration of exchanging of contact lens, contact lens wearing time perone day.