Thursday, October 01, 2009

Compare Prices On Contact Lens

Hard, gas-permeable contact lenses
As the name suggest, hard, gas-permeable contact lenses are hard and are usually made of glass or polymer. These lenses allow more air to pass through the lens than the soft lenses and hence allow the lens to breathe better. When compared to soft lenses, these lenses retain the shape of the eye cornea for longer period of time and also provide better vision for certain type of eye vision problems.