There are a range of contact lenses types made with different materials designed to correct many different eye conditions and to suit all lifestyles. Which ones are best for you may depend on the prescription and any common vision problems you may be experiencing (Myopia, Hyperopia, Presbyopia or Astigmatism).
Soft Lenses are made from gel-like plastics which tend to have a high water content. Hydrogel lenses feel soft, are very comfortable to wear for most of the day and are easy to get used to. Silicone Hydrogel is a newer material that has become the new Biggest Thing in the contact lens world. It offers a much greater oxygen transmission to the eye, giving much more comfort and thus longer hours of wear. Your eyes look healthier and whiter; and the lens allows for better vision and a better fit on your eye. Silicone Hydrogel lenses are more durable, meaning you can sleep in them for up to 29 nights - a level of freedom from glasses that is only rivalled by laser surgery!
RDG (rigid gas permeable) lenses are what we would call ‘hard lenses’. These are highly durable - it is recommended they are changed every year - and are made to order. They offer the clearest and most crisp vision and tend to be easier to handle than softer lenses. The downside to these however is that they can be harder to become accustomed to before they sit comfortably on the eye, due to the fact they are made from firmer plastics. They are brilliant for people with high degrees of astigmatism whose prescription is not suitable for softer lenses.