Additive Effect of Preservative-free Sodium Hyaluronate 0.1% in Treatment of Dry Eye Syndrome With Diquafosol 3% Eye Drops

Treatment with diquafosol 3% with preservative-free sodium hyaluronate 0.1% was more effective than diquafosol 3% monotherapy or treatment with preserved sodium hyaluronate 0.1% in dry eye syndrome. Preservative-free sodium hyaluronate 0.1% eye drops can increase the effect of diquafosol 3% in dry eye syndrome.