Download concordance between the osdi questionnaire and

th
The 8 World Congress on
Controversies in Ophthalmology (COPHy)
Anterior Segment ● Glaucoma ● Retina
Madrid, Spain, March 30 - April 1, 2017
www.comtecmed.com/cophy
CONCORDANCE BETWEEN THE OSDI QUESTIONNAIRE AND BREAK UP TIME (BUT)
SCHIRMER TEST.
J. Guzman, A. Madrid, P. Beneyto, C. PIzzamiglio
Ophthalmology, complejo hospitalario de toledo, spain
AND
Purpose: To determine the concordance between the Ocular Surface Disease Index (OSDI) questionnaire, the
break up time test (BUT) and the Schirmer type I test. Methods: Prospective study, consecutive sampling, 20
women, both eyes included. The variables are the OSDI questionnaire score, BUT value (seconds), value of
the Schirmer type I test without anesthetic (millimeters), and computer work 3 hours a day. A diagnosis of dry
eye was considered a score of OSDI ≥ 13, BUT 10 seconds and Schirmer test 10 mm. The concordance was
determined using the Kappa index, the internal consistency of the OSDI test with the Cronbach alpha
reliability index and the Spearman correlation between the different tests and computer use. Quantitative
variables are expressed as mean and 95% confidence intervals. Results: The mean age was 48.15 years
(43.99-52.31). Cronbach`s alpha of the OSDI test was 0.911. No significant correlations were found between
OSDI and BUT (r -0,053 ; p 0,752), Schirmer ( r-0,047; p 0,777) and computer use (r-0,33 ; p 0,168), but
between BUT and Schirmer (r = 0.466 ; p = 0.002). The concordance was between OSDI and BUT (k =
0.036), OSDI and Schirmer (k = 0.152) and between BUT and Schirmer (k = 0.125). Conclusions: There is no
acceptable agreement between the results of OSDI and the tests of BUT and Schirmer, explainable because
the symptoms and signs in the dry eye are not always parallel. Financial Disclosure: NO