(19)
(11) EP 0 005 131 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.11.1979 Bulletin 1979/24

(43) Date of publication A2:
31.10.1979 Bulletin 1979/22

(21) Application number: 79850032

(22) Date of filing: 23.04.1979
(84) Designated Contracting States:
BE CH DE FR IT LU NL SE

(30) Priority: 21.04.1978 SE 7804614
02.10.1978 GB 3887378

(71) Applicant: Bedding, Peter Michael John
 ()

(72) Inventor:
  • Bedding, Peter Michael John
     ()

   


(54) Methods and materials for cleaning soft contact lenses


(57) A cleaning solution for soft contact lenses is described. The solution differs from previously known solutions in that it includes a lipolytic enzyme together with a buffering substance, such as a phosphate. The cleaning solution removes any lipids present on the surface of the lens by splitting them into fatty acids and esters for removal by subsequent rinsing and, optionally, boiling in physiological saline solution.
A supplementary cleaning solution comprises, in addition to the lipolytic enzyme, a proteolytic enzyme, such as papain or bromelain, such solution providing for complete removal of all deposits from the surface of the lens. The solution of the invention is preferably hypertonic and it is applied either by using a droplet technique or by introducing the lens fully into the solution.





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