A gentle, effective, thimerosal-free formula, is especially formulated for contact lens wearers. Comfort Drops for All Contact Lenses. Moistens Lenses, moistens eyes, clears lenses, refreshes. OptiTears Rewetting Drops give you a refreshing burst of moisture for added comfort when wearing contact lenses Removes particles that cause irritation Helps prevent deposit build-up For Use with all Silicone Hydrogel and other Soft Contact Lenses Made in Belgium. Can be used with our without contact lenses.