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2 124 537

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C1

(51)

IPC

(21) (22)

Application

96113245/04, 1996-07-04

(22)

Actual filing date

1996-07-04

(45)

Published

1999-01-10

(72)

Inventor

Ushakov N.A.Novikov S.A.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Voennoj Meditsiny

COMPOSITION AND METHOD FOR MANUFACTURING CONTACT LENS Russian patent published in 1999 - IPC

Abstract RU 2124537 C1

FIELD: ophthalmology. SUBSTANCE: 1.5-3% aqueous solution of tanner is added to 6-10% aqueous solution of gelatin at 45-55 C on the basis of 50 mcl of the former per 1-2 ml of the latter. Polymerization is carried out in open mold of polymethylmethacrylate at 18-22 C for 24 hr. To shorten tanning process time to 1 hr, temperature can be raised to 45-55 C. Finished lens is detached from mold spontaneously, placed in physiologic solution, and finally sterilized. Utilization of inert gelatin as raw material and addition of modifier (tanner) used in movie industry for tanning emulsion light-sensitive layers is possible. EFFECT: improved acceptability of lenses. 2 cl, 3 ex

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RU 2 124 537 C1

Authors

Ushakov N.A.

Novikov S.A.

Dates

1999-01-10—Published

1996-07-04—Filed

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