Liquid for contact lenses

• US 6,093,686 A
• Filed: 03/09/1999
• Issued: 07/25/2000
• Est. Priority Date: 03/12/1998
• Status: Expired due to Term

• Current Assignee: Menicon Company Limited
• Original Assignee: Menicon Company Limited
• Inventors: Matano, Yutaka, Nakada, Kazuhiko
• Primary Examiner(s): Fries, Kery
• Assistant Examiner(s): Garrett, Dawn L.
• Application Number:
  US09/265,544
• Time in Patent Office: 504 Days
• Field of Search: 510/112-115, 510/475, 514/839-840, 424/78.04, 422/28, 564/463, 564/509
• US Class Current: 510/112
• CPC Class Codes: C11D 3/0078 Compositions for cleaning contact lenses, spectacles or lenses
• CPC Class Codes: C11D 3/3723 Polyamines or polyalkyleneimines

Abstract

A liquid for contact lenses, containing a polymer (A) having a recurring unit represented by the formula (I): ##STR1## wherein n is 0 or 1. The liquid for contact lenses can considerably decrease variation of the base curve of a contact lens during preservation, and shows excellent antiseptic effect and excellent antibacterial effect.

Claims

1. A liquid for replaceable and removable contact lenses containing from 0.01 to 10 w/v % of a polymer (A) having a recurring unit represented by the formula (I):

##STR6## wherein n is 0 or 1, wherein the weight average molecular weight of the polymer (A) is 500 to 200,000, said liquid functioning as a preserving solution, a cleaning solution, a disinfecting solution, or a liquid used for at least two of preservation, cleaning and disinfection.

2. The liquid for contact lenses of claim 1, wherein the polymer (A) is a polyallylamine having a recurring it represented by the formula:

##STR7##

3. The liquid for contact lenses of claim 1, which contains at least one of an antiseptic, a chelating agent, a buffer, an isotonizing agent, a thickener and a surface active agent.

4. In a combination of a removable and replaceable contact lens and a preserving liquid for preserving said contact lens and optionally having a function selected from cleaning, disinfecting and both cleaning and disinfecting said contact lens, wherein said contact lens is submerged in said liquid, the improvement wherein said liquid contains a polymer (A) having a recurring unit represented by the formula (1):

wherein n is 0 or 1, and said polymer has a molecular weight of from 500 to 200,000.

5. The combination of claim 4 wherein said polymer (A) is a polyallylamine having a recurring unit represented by the formula ##STR8##

6. The combination of claim 4 wherein the content of the polymer (A) in said liquid is 0.01 to 10 w/v %.

7. The combination of claim 4 wherein said liquid contains at least one of an antiseptic, a chelating agent, a buffer, an isotonizing agent, a thickener and a surface active agent.

8. In a method of at least one of preserving a removable and replaceable contact lens, cleaning said contact lens and disinfecting said contact lens, comprising contacting said contact lens with a liquid for contact lenses to carry out at least one function selected from preserving, cleaning and disinfecting said contact lens, the improvement wherein said liquid for contact lenses contains a polymer (A) having a recurring unit represented by the formula (I):

##STR9## wherein n is 0 or 1, and wherein said polymer has a molecular weight of from 500 to 200,000.

9. The method of claim 8 wherein the polymer (A) is a polyallylamine having a recurring unit represented by the formula ##STR10## wherein n=1.

10. The method of claim 8 wherein the content of the polymer (A) in said liquid is 0.01 to 10 w/v %.

11. The method of claim 8 wherein said liquid for contact lenses further contains at least one of an antiseptic, a chelating agent, a buffer, an isotonizing agent, a thickener and a surface active agent.