The water evaporation rate from the tear film of eyes with anterior surface pathology (corneal and/or conjunctival scars, meibomitis) was tested by means of the "Rolando-Refojo tear evaporimeter', which allows noninvasive and reproducible test conditions. These eyes show a statistically significant increase in tear evaporation rate compared to normal eyes. The clinical implications of this finding are discussed.
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Rolando et al. (2010) studied this question.