[Class : 1] Chemicals For Use In Ophthalmologic Procedures And Surgery, In Particular Fluorinated Compounds, Preferably In Ultrapure Form, Fluorinated Silicones, Fluorinated Hydrocarbons And Mixtures Thereof, Hydrophilised And Lipophilised Silicones, Hydrophylised Hydrocarbons And All Mixtures Of The Aforesaid Silicones; Silicones And Hydrocarbons And Mixtures With Further C...