[The study of resorcin eyedrops]

Seven resorcin eye drop formulas using various physico-chemical stabilizers, acid buffer solutions, antioxidants such as sodium pyrosulphite, cysteine and keodants such as EDTA--Na were prepared. A parallelism between the physico-chemical stability and local biological tolerance in rabbit eyes was found, fact demonstrating that the occurrence of some oxidation products are responsible for the biological intolerance manifestations. A pH under 5 is favourable to resorcin stability and local biological tolerance to resorcin eye drops.