Development of contact lenses
February 5th, 2009 | by zoe |Over the years contact lenses have improved tremendously. From the start of hard Perspex lenses to the daily disposable lens and now also the “permanent wear” lenses.
Unfortunately the difficult wearing adaptation of the hard lens have cast a long shadow and not until the 1990’s potential contact lens wearers started to realize that wearing of the modern advanced contact lenses is comfortable and hassle-free. The experience of feeling a foreign object placed on your eye when trying contact lenses is over. Nowadays a large numbers of people especially in the entertainment industry are wearing colour enhanced lenses in order to look better rather than seeing better. Even a darker hazel coloured iris can be changed to for example blue. Some Asian ladies always wanted to have “blue eyes” and this has now become easy and cheap.
With the introduction of the daily disposable lens the try of making your contact lens 100% clean and sterile is not required. No more bottles of contact lens solutions to be carried around when travelling. After using this lenses at the day time it can put it into rubbish bin before going to bed – next morning a new lenses can be pulled out off a blister pack of lenses. All very easy and convenient.
For those people who are working irregular hours or have to get ready for work unexpectantly in case of emergency (like firemen or medical staff) there are the “continuous wear” contact lenses. One of the well known brands is “Night & Day” by CibaVision. This type of lens can be worn without removing it from the eye for up to a week at a time. After a good clean this procedure can be repeated once a week. After one month the lens need to be disposed and replaced with a new and fresh replacement lens. Thanks to the high oxygen transmission this lens can be safely worn although regular check-ups by an optometrist are recommended.