Electrode for use in electroretinography

Details Electrode for use in electroretinography Electrode for use in electroretinography

1986-03-05

1988-04-05

Howell, Kyle L.

Surgery

Truss

Pad

128642, 128793, 128798, A61B 504

Patent

active

047352078

ABSTRACT:
This invention is directed to an electrode for use in electroretinography. The electrode contains a thin membrane made of a hydrogel of high water content and a conductor connected to the thin membrane. The thin membrane is prepared by casting an aqueous polyvinyl alcohol solution into a mold, freezing the cast aqueous solution to obtain a frozen mass, thawing the frozen mass and subjecting the thawed mass to one to seven additional cyclic freezing and thawing treatments. The thin membrane can also be prepared by subjecting the frozen mass to partial dehydration in a vacuum until the percentage dehydration rate reaches not less than 3 wt %.

REFERENCES:
patent: 3998215 (1976-12-01), Anderson et al.
patent: 4109648 (1978-08-01), Larke et al.
patent: 4474570 (1984-10-01), Ariura et al.
patent: 4617935 (1986-10-01), Cartmell et al.
Y. Honda, "General Examination Methods in Opthamology" (Opthamologic MOOK (3)), pp. 137 ff. (1978).
J. G. F. Worst et al, Am. J. Ophth., vol. 51, pp. 410 ff. (1961).
H. Kawabata, Annual Review of Japanese Opth. Soc., vol. 18, pp. 848 ff. (1967).
Y. Kubota, J. Japanese Opth. Soc., vol. 67, pp. 185 ff. (1963).
D. Yonemura et al., Opthamology, vol. 13, pp. 455 ff. (1971).

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