Introduction of Contact Lenses in Various Fields of Human Activities
Many contact lenses now are daily wear; they Vision 20/20 Protocol Ebook Review are worn during the day and removed at night. They must be removed because otherwise they would inhibit the oxygen flow to your cornea and cause problems. The bottom line is that your eyes require time to rest and recover from wearing contacts. But removing them at night and putting them back in every day can be a pain, and many contact wearers would rather avoid this ritual when they can. To meet this demand, contact lens manufacturers have developed a contact lens material that will allow free movement of oxygen. With these lenses you can keep your contacts in for days or weeks at a time safely. These new contact lenses allow six times more oxygen to enter the eye than regular soft contact lenses allow through. Extended wear contact lenses are constructed using a soft, extra-permeable silicone hydrogel that will actually "breathe"; oxygen can easily reach the eye and the lenses can be left in