Air Optix Night and Day Aqua
30 day continuous wear soft contact lenses are now even better
The Air Optix Night and Day Aqua soft contact lenses have replaced Focus Night and Day lenses which were discontinued on March 16, 2009. The primary benefit to patients that use the "new and improved" Air Optix Night & Day Aqua lenses is that they offer better comfort than the predecessor lenses (Focus Night & Day). In fact patients preferred the new AirOptix Night & Day two to one over the Focus Night & Day. The comfort improvement is a result of a change in the design of the lens and the way it interacts with the cornea. The angle of interaction has been changed to make the contact lens more comfortable and to improve the ability for the lens to stay moist and not dry out on the eye. The net result is quicker adaptation and better comfort while wearing the new Air Optix Night & Day Aqua. The proprietary lens material also minimizes the rate of dehydration of the lens on the eye and the ultra smooth surface of the lens helps to reduce deposits on the lens and maintain better comfort.
Also, Air Optix Night & Day Aqua lenses now have a very light blue tint for better visibility which makes them easier to see if dropped. However, the light blue tint will not change the color of your eyes. These lenses also have an inversion indicator on the edge of the lens that says "OK" when viewing the lens from the outside in order to tell if it is inside-out.
Air Optix Night & Day lenses are monthly disposable contact lenses which have been FDA approved for 30 days of continuous extended wear, which means they are approved to be slept in for 30 days continuously. This is not something that is recommended for all patients. All patients should discuss their own continuous wearing time with their eye doctor.
Greater Risk of Eye Infection from Extended Wear Contacts
Sleeping in soft contact lenses will put you at a greater risk for corneal infection which is extremely painful and can cause corneal scarring that could possibly obscure the vision in the infected eye permanently if the infection is located in the central cornea. All contact lens wearers should remove the lenses immediately if vision seems blurred, if your eyes are red, or if there is any pain or discomfort in your eyes that doesn't go away within 10-15 minutes.
Oxygen is Required by the Cornea
These lenses are approved for extended wear due to their high permeability to oxygen. This is a major advantage because wearing lenses which let oxygen through is much healthier for the eyes. During sleep the amount of oxygen to the corneal cells is greatly reduced or eliminated. The cells of the cornea require oxygen like all living cells. After a prolonged period of reduced oxygen supply the cornea cells undergo changes which eventually cause total destruction to the tissue. The cells of the cornea swell from the reduced supply of oxygen resulting in corneal edema, possible corneal abrasion, blurred vision, and new blood vessels will begin to grow into the cornea. The growth of new blood vessels (called neovascularization) is the body's own defense mechanism to help provide nutrition to the corneal cells. The cornea must remain an avascular tissue (no blood vessels in the cornea) to maintain its crystal clear integrity. Cornea cells are supplied oxygen from the air and from the oxygen in the tears of the eyes-not from blood vessels. Blood vessels in the cornea will cause permanent scarring in the cornea.
Air Optix Night & Day Aqua Soft Lenses have the highest oxygen transmission of any soft lens in the world!
If you do wear extended wear lenses for 30 days continuously Air Optix Night & Day soft lenses are the lenses of first choice.
Air Optix Night & Day Aqua is a registered trademark of CIBA VISION Corporation.
Dr. J.R. Lacey, author of this article, has NO financial interest in Alcon/Ciba Vision or Air Optix Night & Day contact lenses.