Bausch & Lomb Boston Advance Cleaner is a specially formulated cleaning solution designed for rigid gas permeable contact lenses. The Cleaning solution is a sterile, concentrated, homogeneous surfactant solution. It leaves the lenses clear and ready for the next step in the process disinfection. How to useBausch & Lomb Boston Advance Cleaner: Wash hands with mild soap. Rub both sides of the lenses carefully with two to four drops of Boston Advance Cleaner in the palm of your hand for twenty seconds. Remove all traces of the cleaner by thoroughly rinsing with fresh tap water. Place lenses in empty lens case and fill with fresh Boston Advance Comfort Formula Conditioning Solution. Soak lenses for at least four hours (or overnight) before wearing. Discard solution ninety days after opening. Record date opened in space provided on bottle label. Note:When used daily, this solution will be depleted before ninety days. Warnings relating to Bausch & Lomb Boston Advance Cleaner: Do not use this solution if you are allergic to any ingredient in this product. Not For Use With Soft (Hydrophilic) Contact Lenses. This cleaner will irritate your eyes unless removed from lenses by thorough rinsing. If instilledinto the eyes, immediately remove lenses andflush eyes with fresh tap water until cleaneris thoroughly removed from the eyes. Never reuse this solution. Always use fresh solution for soaking and storing lenses. Always wash your hands before handling your lenses. Store solutions at room temperature. Avoid freezing. After inserting your lenses, always thoroughly clean the interior of the lens case with hot water and air dry after each use. Use before expiration date on the container. Never soak lenses in any cleaner. Always rinse lenses thoroughly with fresh tap water after cleaning. Keep out of reach of children. You should carefully read all product packaging and labels prior to use Side effects relating to Bausch & Lomb Boston Advance Cleaner: Eyes stinging, burning, itching (irritation) Excessive watering (tearing) of the eyes Unusual eye secretions Redness of the eyes Reduced sharpness of vision (visual acuity) Blurred vision Sensitivity to light (photophobia) Dry eyes If you notice any of the above conditions, immediately remove and examine the lenses. If the problem stops and the lenses appear to be undamaged, thoroughly clean, rinse and disinfect the lenses and reinsert. If the problem continues or if a lens appears to be damaged, do not reinsert. Contact your eye care professional immediately. If any of the above problems occur, a serious condition such as infection, corneal ulcer, neovascularization or iritis may be present. Seek immediate professional identification of the problem and treatment to avoid serious eye damage.