NL7603359A - High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride - Google Patents
High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydrideInfo
- Publication number
- NL7603359A NL7603359A NL7603359A NL7603359A NL7603359A NL 7603359 A NL7603359 A NL 7603359A NL 7603359 A NL7603359 A NL 7603359A NL 7603359 A NL7603359 A NL 7603359A NL 7603359 A NL7603359 A NL 7603359A
- Authority
- NL
- Netherlands
- Prior art keywords
- monomer
- unsatd
- idene
- anhydride
- vinyl
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G02B1/043—Contact lenses
Abstract
A contact lens with an oxygen transmission corresp. at least to an atmos. oxygen equiv. of 5% comprises a polymeric hydrogel contg. >=30 wt. %, pref. 50-85 wt. % water, based on total wt. of hydrogen, the molecular structure of the hydrogel contg. ionic gps. and the hydrogel being the hydrated polymer obtd. from a monomer mixt. contg. a large amt. of a vinyl(idene) monomer, and smaller amts. of an unsatd. anhydride or acid and a crosslinking agent. The lens is soft, hydrophilic, can be worn for long periods without causing anoxy of the underlying correa, undergoes minimum displacement during blinking, has high oxygen permeability and can be sterilised in boiling water without causing deterioration of the polymer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7603359A NL7603359A (en) | 1976-03-31 | 1976-03-31 | High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7603359A NL7603359A (en) | 1976-03-31 | 1976-03-31 | High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7603359A true NL7603359A (en) | 1977-10-04 |
Family
ID=19825919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7603359A NL7603359A (en) | 1976-03-31 | 1976-03-31 | High oxygen transmission contact lens - comprising crosslinked ionic polymer hydrogel obtd. from vinyl(idene) monomer, unsatd. acid or anhydride |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL7603359A (en) |
-
1976
- 1976-03-31 NL NL7603359A patent/NL7603359A/en unknown
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