PureVision2 contact lenses are high quality, super breathable extended wear contact lenses that can be worn for up to 29 nights if this wearing schedule is advised by your optician.
Made from an ultra-breathable silicone hydrogel material, PureVision2 lenses allow three times more oxygen to reach the eyes than a traditional hydrogel contact lens.
Designed to be worn for up to 29 nights consecutively, these lenses prioritise comfort for your eyes, allowing you to easily use them for hours at a time. Even in the most challenging environments, their unique design helps to stop them from drying out. This makes them ideal for anyone who spends long hours in front of a screen at work, or needs to concentrate on the road for a while.
PureVision2 contact lenses are also designed to combat the common problem of spherical aberration. With traditional contact lenses this is the increased reflection of light that causes halo glares and vision to become blurred and unclear in certain light conditions. However with PureVision2 contact lenses this problem has been significantly reduced to give crisp, clear vision.
Minimum expiry date.
18 months from date of purchase
The maximum time of wearing lenses, after which you need to replace them.
Lens intended to be worn daily or extended wear schedule for a period of 30 days.
Lenses wear for a few dozen hours a day. Removing it while you sleep.
Lenses can be worn without removing it. All the time (during the life span, see Modality), day and night, even during sleep. After the end of the life span lenses must be replaced.
The same power.
-6,50D to -12,00D (0,50D step)
0,00D to -6,00D (0,25D step)
+0,25D to +6,00D (0,25D step)
|Base Curve (BC)|
|Oxygen permeability (Dk/t)|
It indicates the amount of oxygen which passes through the lens. The oxygen permeability is an key indicator of the lens material. It determines how much oxygen (which is necessary for proper performance) receives a cornea of our eyes. The higher the value, the better. Dk/t is common used and it states: the Dk per thickness of the lens. Usually for a lens at -3.00D, which makes it easier to compare different lenses brands. Ranges from 10-20 Dk/t to over 170 Dk/t.