| (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 |
| (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.