When used as a daily wear lens. Bausch and Lomb Ultra for Presbyopia can be worn for up to 30 days and should be cleaned and stored in contact lens solution overnight. If this lens has been approved for extended wear by your optician, you can wear the lenses for up to 6 nights and 7 days. The lenses should be then cleaned on the 7th night and used again for up to 30 days.