Composition containing bis-chromonyl compounds

Abstract From the Canadian patent

Diseases of the skin and eye are combated by applying thereto compounds of formula, (I), and their salts esters and amides, wherein the R's are hydrogen halogen, lower alkyl, hydroxy, lower alkoxy lower alkenyl, benzyloxy, nitro, substituted lower alkyl or substituted lower alkoxy and X is a, saturated or unsaturated, substituted or unsubstituted straight or, branched polymethylene chain which may be interrupted by one or more carbocyclic rings or oxygen-containing heterocyclic rings oxygen, atoms or carbonyl groups.