SANTEN FX Eyedrops CL Contact Lenses. Sante FX Contact is an eye drop that refreshes the eyestrain when wearing contact lenses with a refreshing feeling. It energizes the eyes, reduces inflammation and relieves contact discomfort. We support your eyes that continue to work with a feeling of exhilaration. It can be used while wearing all contact lenses except colored contact lenses. Soft / O2 / Hard / Disposable It can also be used by those who do not wear contact lenses.