Hydrogen peroxide solutions

Hydrogen peroxide cleaner solution is preservative free. If you had allergic reactions to an all-in-one (regular cleaners) in the past, or have sensitive eyes, you could be better off using a hydrogen peroxide cleaner.

As peroxide based solutions requires a waiting process for cleaning of lenses, it is convenient to leave overnight at home, on a daily basis. People with a 9-5 job, or routine will likely find this cleaning system more convenient.

Hygiene caution is easier with peroxide based cleaners, as it cleans more effectively.

How it works? Peroxide solution cleans contact lenses through a catalyst process, where contact lenses are ideally left overnight while acid transforms into water. Depending on make of peroxide cleaner, manufacturers specify minimum times to leave lenses soaking; 20 minutes – 6 hours. If lenses are used before the neutralization process finishes, it can damage the eye and will sting, burn, cause red eyes and irritation as it would be when you pour acid into your eyes. To avoid problems like these, it is advisable to read the manual and buy saline as a complement to rinse lenses with.

The neutralisation process works in one of 3 ways:

1. Most common is a small metal disc fitted to the standing lens case, reacting with the solution.
2. Another option is a 2 step system, where you use one solution to disinfect and another solution to neutralize.
3. An older, more uncommon system, is using a neutralizing tablet in the solution. These would sometimes change colour of the liquid to indicate when neutralizing process is done.