Directions Gel is particularly suited for severe dry eye or nighttime use. • Wash hands well before use. • Take one single-use vial off the strip. Turn upside down, tap the vial and twist off the top. • Instill 1 or 2 drops in the affected eye(s) as needed. If you wear contact lenses: you must remove them before using iVIZIA gel. After use wait at least 30 minutes before putting your lenses back in.