Yes, disposable lenses that were worn by the individual before or while having pink eye or an infection, should be immediately thrown out. But if you have hard lenses, make sure you clean them properly before using them again. Individuals who currently have pink eye are very unlikely to use lenses while they have symptoms of redness, itchiness, watery discharge etc. You can easily avoid eye infections if you use sterile contact lens solutions and store your contacts carefully. Washing and properly cleaning your hands before insertion and removal of lens is highly recommended.