Some of Johnson & Johnson Vision Care’s contact lenses are equipped with Accelerated Stabilization Design – also referred to as BLINK STABILIZED® Design. What makes this design so different is the shape of the lens. The lens design is uniformly thin around the lens edge. This is the area that is located underneath the top and bottom eyelids. Conversely, there are 4 small, evenly spaced and slightly thicker zones in the area of the lens that interacts with the eyelids.
How does this make a difference and what happens during an eye blink? In the split second of each blink, the top eyelid comes down over the cornea while the lower lid pulls in towards the nose. Furthermore, the eyelid makes contact with areas of changing thickness on a lens, causing the lens to move. The more contact between the eyelid and the contact lens, the more movement. This can give contact lens wearers a fluctuating vision. Other lenses such as prism-ballasted designs are thicker towards the bottom. By creating this thickness differential, lens designers believe that the upper lid would squeeze the lens into position. Instead, by having a thicker area near or under the eyelid, the movement is accentuated. A thicker edge means more interaction with the lower eyelid during a blink and more interaction means less stability.
Contact lenses with BLINK STABILIZED® Design are much thinner under each of the eyelids. This means there is less interaction before, during and after a blink. As a result, patients get less twisting movement with this lens. This is not the only advantage of this type of lens design. Because of the unique placements of the thicker areas in this design, the interaction between the lens and the eyelid actually increases lens stability and re-positioning. During a blink, the eyelid interacts with the lens in four specific areas called ‘active zones’. Because of where these 4 active zones are located, each blink squeezes the lens into place even in extreme head positions.
Should the lens be inserted incorrectly, the blinking eyelid helps to re-position the lens into place quickly. This is the real break-through of this type of lens design. When you insert the lens, only a few blinks are required to put the lens into its correct position.
ACUVUE Lenses with Accelerated Stabilization Design / BLINK STABILIZED® Design