Abstract
Purpose::
Analyze the differences between mesurements of Schirmer I and basal Schirmer tests in opened and closed eyes.
Methods::
60 eyes of 30 normal subjects were studied. The average age was 28 ± 9 years old, air humidity was 60 ± 2,34 % and average temperature was 20,72 ±1,52 ºC. At the first day, Schirmer I test was performed with the eyes opened. After an interval of 6 hours, the Schirmer I test was performed with the eyes closed. At the second day, the same procedure was performed for the basal Schirmer test. Schirmer test measurement was compared and statistically analyzed.
Results::
Measurements of Schirmer I test performed with the eyes opened (18.85+-17.88) showed statistically greater values when compared with the same test performed with the eyes closed (10.30+-11.55) (p<0.0001). Measurements of Basal Schirmer test performed with the eyes opened 6.14+-6.13) showed statistically greater values when compared with the same test performed with the eyes closed (3.62+-2.93) (p=0.0038).
Conclusions::
The Schirmer I and Basal Schirmer measurements performed with opened eyes were statisticaly different from the ones performed with the eyes closed.
Keywords: cornea: tears/tear film/dry eye • lacrimal gland