Aqueous ionic solutions and their uses in particular in ophthlamology

Abstract

The invention concerns the use for treating and cleaning the eye and is appendages of aqueous ionic solutions obtained from sea water whereof the ionic compositions is qualitatively that of sea water and quantitatively such that their pH ranges between 4 and 9, preferably between 7 and 8 and their osmolality ranges between 150 and 700, preferably between 250 and 350 mOsm/kg.

1 . The use, for treating and cleaning the eye and its appendages, of aqueous ionic solutions obtained from seawater whose ionic composition is, from the qualitative point of view, that of seawater, and from the quantitative point of view such that, on the one hand, their pH is from 4 to 9, preferably from 7 to 8, and, on the other hand, their osmolality is from 150 to 700, preferably from 250 to 350 mOsm/kg.  
     
     
         2 . The use as claimed in  claim 1 , in which the aqueous ionic solution is obtained by diluting seawater, in particular with distilled water, especially at the rate of 2 to 5 fold.  
     
     
         3 . The use as claimed in  claim 1 , in which the aqueous ionic solution is obtained from seawater by techniques known by the term desalination and, optionally, enriched with at least one of its ions.  
     
     
         4 . The use as claimed in  claim 1 , in which the aqueous ionic solution is artificially obtained from sea salts.  
     
     
         5 . A novel aqueous ionic solution obtained from seawater, characterized by: 
 a pH value preferably less than or at most equal to the lowest pH values of seawater,    an osmolality lower than that of seawater, and    a composition, from the ionic point of view, which is qualitatively and quantitatively that of seawater, with the exception from the quantitative point of view, on the one hand, of the potassium concentration which is greater than that of seawater and, on the other hand, of the Na, Mg, Ca and Cl concentrations which are less than those of seawater, said concentrations being 
 for Na + , from 1 300 to 1 500, preferably from 500 to 1 000 mg/l,  
 for K + , from 4 500 to 6 500, preferably from 5 000 to 6 000 mg/l,  
 for Mg ++ , from 50 to 1 300, preferably from 100 to 500 mg/l,  
 for Ca ++ , from 20 to 350, preferably from 40 to 200 mg/l,  
 for Cl − , from 4 000 to 6 000, preferably from 4 500 to 5 000 mg/l.  
   
     
     
         6 . An ophthalmic product for treating and cleaning the eye and its appendages based on an aqueous ionic solution as claimed in  claim 5  or as used in one of  claims 1  to  4 .