• solution
  • Furthermore, it has been discovered that natural occurring compounds alone and in combination with chemical agents can be used in ophthalmic solutions such as contact lens solution to enhance and complement their anti-microbial, cleaning and wetting activity or to reduce irritation to the eye. (google.co.uk)
  • 17. The ophthalmic solution of claim 16, wherein the wetting agent comprising a saponin. (google.co.uk)