Non-intrusive tear evaporimeter

Details Non-intrusive tear evaporimeter Non-intrusive tear evaporimeter

1982-04-28

1984-07-24

Howell, Kyle L.

Surgery

Truss

Pad

128632, 73 29, A61B 500

Patent

active

044613032

ABSTRACT:
The non-intrusive measurement of preocular tear film evaporation employs a goggle fitted on a subject and connected with apparatus for introducing air of known conditions to a goggle chamber over one eye, apparatus for controlling air movement within the goggle chamber, and apparatus for humidity measurement of the chamber air.
A measure of palpebral aperture readily provides the area of the exposed eye surface, for calculating the rate of tear evaporation.

REFERENCES:
patent: 3139085 (1964-06-01), Custance et al.
patent: 3318302 (1967-05-01), Adams
patent: 4066068 (1978-01-01), Nilsson et al.
patent: 4303063 (1981-12-01), Stahl
patent: 4398543 (1983-08-01), Sandlin et al.

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