Ophthalmic composition for soft contact lens comprising terpenoid

Abstract

Disclosed is an ophthalmic composition for a soft contact lens, which is characterized in that the adsorption of a terpenoid contained in the composition onto a soft contact lens is reduced. The ophthalmic composition comprises a combination of Component (A) 0.005 to 0.01 wt % of a terpenoid and Component (B) alginic acid and/or a salt thereof.

1. A method for suppressing adsorption of a terpenoid to a soft contact lens comprising contacting the soft contact lens with an ophthalmic composition comprising 0.005 to 0.1% by weight of a terpenoid and 0.005 to 0.5% by weight of alginic acid and/or a salt thereof whereby the adsorption of the terpenoid to the contact lens is suppressed and wherein the terpenoid is at least one member selected from the group consisting of menthol, camphor and menthone. 
     
     
       2. The method according to  claim 1 , wherein the ophthalmic composition has an osmotic pressure of greater than 1, where the osmotic pressure of a 0.9 w/v % aqueous sodium chloride solution is defined as 1. 
     
     
       3. The method according to  claim 1 , wherein the ophthalmic composition is an eye drop, and wherein the soft contact lens is worn on the eye when contacted by the ophthalmic composition. 
     
     
       4. The method according to  claim 1 , wherein the soft contact lens is a silicone hydrogel soft contact lens.