Schirmer test performed with open and closed eyes: variations in normal individuals
Schirmer test performed with open and closed eyes: variations in normal individuals
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DOI:
10.1590/s0004-27492009000100013
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发表时间:
2009-02-01
影响因子:
1
通讯作者:
Hida, Richard Yudi
中科院分区:
文献类型:
--
作者:
Serruya, Leão Gabbay;Nogueira, Daniel Cruz;Hida, Richard Yudi
Purpose: To analyze the difference between measurements of Schirmer test I (ST(I)) and basal Schirmer test (ST(B)) with open and closed eyes. Methods: Sixty eyes of 30 normal volunteers, 12 males and 18 females aged 28 +/- 9 years were recruited for the study. All ST were carried out in a closed environment with the absence of airflow (humidity 60 +/- 2.34% and temperature 20.72 +/- 1.52 C). ST(I) and ST(B) were performed with the individuals' both eyes open and closed with an interval of 6 hours. All ST were conducted in 5 minutes. For statistical analysis, the ST strip's wetting velocity (ST(V)) (in millimeters per minute) was calculated, dividing the ST values by its wetting time. If ST values were 35mm before 5 minutes, wetting time was recorded to obtain ST(V). Results: ST (V) measurements of ST(I) performed with closed eyes (10.30 +/- 11.55) were statistically different from those performed with open eyes (18.85 +/- 17.88) and ST(V) measurements of ST(B) performed with closed eyes (3.74 +/- 3.14) were statistically different from those performed with open eyes (6.19 +/- 5.86). Conclusion: ST performed with open or closed eyes can have an important influence in the results of ST(I) and ST(B) in normal individuals.