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Comparison of subject values between observers for both the LacryDiag and the Keratograph. (A) Tear meniscus height; (B) NIBUT; (C) interferometry; and (D) meiboscore. The interferometry correlation coefficient between observers using the LacryDiag (R = 0.356) was markedly decreased compared to the Keratograph (R = 0.670). Pearson's correlation coefficient. LD, LacryDiag; KG, Keratograph; N = 30.
