Extended wear lenses, the result of new technology in lens materials, transmit more oxygen to the cornea of the eye. Some of these lens materials can be worn up to 30 days, day and night, without removal. Extended wear lenses can last one week, two weeks, or one month, depending upon the lens material and your doctor’s recommendations.
In a very basic form, eyes are thought to have first developed in animals around 550 million years ago!
You actuall...