Method for obtaining lacrimal fluid

Details Method for obtaining lacrimal fluid Method for obtaining lacrimal fluid

1983-11-14

1985-07-02

Coven, Edward M.

Surgery

Truss

Pad

604372, 604294, B23B 3118

Patent

active

045261784

ABSTRACT:
There is described a non-irritating method for obtaining lacrimal fluid in the form of resting secretion, in which a hydrophilic contact lens with a water content of 38% to 85% is brought into contact with the lacrimal fluid, the contact lens absorbing the lacrimal fluid which is then extracted by immersing the contact lens in an extractive solution with a 0.8% to 4% concentration of salts, at least one of which is sodium chloride. The extraction takes place at a temperature of 20.degree. to 24.degree. C., and lasts up to two hours during which the extractive solution is stirred or agitated.

REFERENCES:
patent: 3978164 (1976-08-01), LeBoeuf et al.
patent: 4329999 (1982-05-01), Phillips
Mishima, "Tear Flow Dynamics . . . ", pp. 1801-1805, pre 1979.
Phillips et al., "Long Term Sweat Collection . . . ", Jrnl. Invest. Dermatology, 68: 221-224, 1977.

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