US PATENT SUBCLASS 351 / 160 R
.~.~ Eye contact type

Current as of: June, 1999
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351 /   HD   OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING

41  DF  SPECTACLES AND EYEGLASSES {29}
159  DF  .~ Ophtahalmic lenses or blanks {10}
160 R.~.~ Eye contact type {3}
161  DF  .~.~.~> Multifocal
162  DF  .~.~.~> Colored
160 H  DF  .~.~.~> Hydrophilic

Unofficial Alpha Subclasses: R H

DEFINITION

Classification: 351/160

(under subclass 159) Subject matter wherein the lenses are peculiarly adapted to be placed directly in contact with the eyeball and to move with the eyeball.

(1) Note. The contact lens may comprise ventilating or lubricating channels or ducts to obtain free circulation of lacrimal fluid. The subject matter here may be a compound lens system in which one element is a contact lens worn on the eye and the other element is mounted in front of the eye in the manner of the conventional spectacle lens. The contact lens may comprise a skirt conforming to the conjunctival sac of the eye, said skirt carrying a lens disposed in front of but in spaced relation to the cornea.

SEE OR SEARCH THIS CLASS, SUBCLASS:

247, for methods of fitting contact lenses and instruments for such use.