Ocular Water Evaporation and the Dry Eye: A New Measuring Device

Ocular Water Evaporation and the Dry Eye: A New Measuring Device

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 surfac...

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Veröffentlicht in:Cornea 1993-07, Vol.12 (4), p.335-340
Hauptverfasser: Mathers, William D, Binarao, Gil, Petroll, Matthew
Format: Artikel
Sprache:eng
Schlagworte:
Body Water - metabolism
Cornea - metabolism
Dry Eye Syndromes - metabolism
Humans
Ophthalmology - instrumentation
Osmolar Concentration
Tears - metabolism
Water - analysis
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Zusammenfassung: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 g/cm/s or 0.14 ± 0.06 µ/min at 30% relative humidity. For dry eye patients, the rate was significantly increased to 47.6 ± 20.1 X 10 g/cm/s or 0.43 ± 0.19 µl/min (p
ISSN:0277-3740
1536-4798
DOI:10.1097/00003226-199307000-00010