Ocular water evaporation and the dry eye: A new measuring device

William Mathers, G. Binarao, M. Petroll

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

We developed a simple device to measure the water evaporation from the ocular surface, and we measured the evaporative rate in 18 normal individuals. We compared this to a group of 15 patients with dry eye from low tear production. We found the normal rate of water evaporation from the ocular surface to be 14.7 ± 6.4 x 10-7 g/cm2/s or 0.14 ± 0.06 μl/min at 30% relative humidity. For dry eye patients, the rate was significantly increased to 47.6 ± 20.1 x 10-7 g/cm2/s or 0.43 ± 0.19 μl/min (p <0.005). Neither group showed any evidence of meibomian and dysfunction that might have increased evaporation. From these results, we conclude that evaporation is accelerated when tear production decreases and is of sufficient magnitude to exacerbate the dry eye.

Original languageEnglish (US)
Pages (from-to)335-340
Number of pages6
JournalCornea
Volume12
Issue number4
StatePublished - 1993
Externally publishedYes

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Equipment and Supplies
Water
Tears
Humidity

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Mathers, W., Binarao, G., & Petroll, M. (1993). Ocular water evaporation and the dry eye: A new measuring device. Cornea, 12(4), 335-340.

Ocular water evaporation and the dry eye : A new measuring device. / Mathers, William; Binarao, G.; Petroll, M.

In: Cornea, Vol. 12, No. 4, 1993, p. 335-340.

Research output: Contribution to journalArticle

Mathers, W, Binarao, G & Petroll, M 1993, 'Ocular water evaporation and the dry eye: A new measuring device', Cornea, vol. 12, no. 4, pp. 335-340.
Mathers, William ; Binarao, G. ; Petroll, M. / Ocular water evaporation and the dry eye : A new measuring device. In: Cornea. 1993 ; Vol. 12, No. 4. pp. 335-340.
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