What does the water content of a contact lens mean and why is it so important?

The water content of a contact lens means exactly that – how much of the contact lens is made up of water. This figure is always given as a percentage.

How can I find out the water content of my contact lenses?

Usually, you’ll be able to find the water content percentage displayed on the packaging of your contact lenses. Here, you’ll also see the components that make up the rest of the lens and which material forms the surface of the lens.

To find out the water content of your contact lenses, or the lenses you’re looking to buy, why not take a look at our contact lens specification table?

Does the water content percentage affect the comfort level of my lens?

A higher water content generally means a thicker lens, which can often be felt in the eye. High water lenses, contrary to popular belief, are generally not the best for dry eyes. Nowadays, mid water lenses, which are thinner and more widely worn, offer a greater degree of comfort to the wearer. The general design of the lens and the smoothness of its edges will also have a major contributing factor to the comfort on the eye.

Your optician will prescribe you the best lenses for your eyes, and if you have particularly dry eyes then you’ll most likely be prescribed mid water lenses due to their versatility and comfort.

Quick links:

How dehydration impacts your eyes
A guide to dry eyes