Avaira Vitality - Parameters and Specs

Your wearing schedule should be determined by your Eye Care Professional. It is important to have regular checkups and it is critical to adhere to the maximum wearing schedule as recommended by your Eye Care Professional as he/she will determine wearing time based upon your physiological eye condition and your response to the lenses.

The base curve (BC) - measured in millimeters - is also known as the Back Optic Zone Radius (BOZR).

It is measuring the radius of the back surface of the contact lens.

Some contact lenses contain wetting agents to retain moisture. They might be integrated into the lens or added to the packaging solution:

• PVP - polyvinylpyrrolidone
• PEG - polyethylene glycol
• PEOX - poly-2-ethyl-2-oxazoline
• HPMC - hydroxypropyl methylcellulose
• PVA - polyvinyl alcohol
• PC - phosphatidylcholine
• PO - poloxamer

Oxygen Transmissibility (at -3.00D, center, non-edge-corrected). This value indicates to which degree oxygen may pass through a particular material of a given thickness. It is equal to the oxygen permeability divided by the thickness of the measured sample under specific conditions. The higher the oxygen transmissibility the easier it is for oxygen to flow through to your eye.

UV-A Blocking covers the range from 316nm to 380nm.
UV-B Blocking covers the 280nm to 315nm spectrum.

The FDA classifies UV blocking capabilities of contact lenses into two groups. In order to be classified into one of the groups, the UV blocking capabilities must meet the following requirements:

Class 1:

• filters >90% of UVA light
• filters >99% of UVB light

Class 2:

• filters >50% of UVA light
• filters >95% of UVB light

IMPORTANT NOTE: UV-absorbing contact lenses are not substitutes for protective UV-absorbing eye-wear, such as UV-absorbing goggles or sunglasses, as they do not completely cover the eye and surrounding area. Patients should continue to use UV-absorbing eye-wear as directed.

Typical price range per box. Prices might further vary based on buying multiples or after applying coupons or rebates.

We regularly scan the most trusted vision care retailers in North America and Europe. Our price monitoring includes retailers from the U.S., Canada, U.K., Germany, and other EU countries so that you can save money when you purchase your contact lenses or other vision care products online.