SOFT CONTACT LENSES

Bausch & Lomb PureVision®

Upgrade your hydrogel contact lens-wearing patients to Bausch & Lomb PureVision® silicone hydrogel contact lenses with enhanced aspheric optical design. PureVision® contact lenses deliver the ultimate technology in material and optical design to provide your patients with exceptional vision, health and comfort.

Parameters

Enhanced aspheric optical design delivers next-generation aberration correction for exceptional vision.

Spherical Aberration is Inherent Within The Ocular System

In the general population, 0.15 microns of positive spherical aberration is typical for a 6.0mm pupil.*

0.15 microns of positive aberration in a typical eye	0.00 microns of spherical aberration in an ideal eye

Standard Spherical vs. Enhanced Aspheric Optics

Standard spherical contact lenses induce spherical aberration.

• Spherical aberration is not consistent across lens powers.

Negative spherical aberration increases as power is increased to correct myopia.

PureVision® silicone hydrogel lenses control spherical aberration.

• PureVision lenses are designed with an aspheric anterior surface to reduce both inherent and induced spherical aberrations.
• The enhanced optical design within PureVision® lenses reduces spherical aberration across all lens powers.

PureVision® lenses with patented AerGel silicone hydrogel material have overnight corneal swelling equivalent to wearing no lens at all.¹

AerGel silicone hydrogel material coupled with Perform surface process delivers:

• Enhanced wettability and deposit resistance without inhibiting
  oxygen or fluid transport.
• High oxygen transmissibility for healthy, white eyes.
• Reduced risk of hypoxic stress to help maintain excellent ocular health.

¹ The illustrations represent results from a series of overnight corneal swelling clinical studies of adapted daily wear soft lens patients. For these investigations patients wore conventional hydrogel lenses (Dk/t ranged from 24 to 40), 100% silicone elastomer lenses (Dk/l > 200), PureVision lenses or no lens. A -3.00D lens was used for the overnight corneal swelling lens comparisons. Corneal swelling measurements
were made following closed eye conditions for approximately 8 hours).

• AerGel silicone hydrogel material coupled with Performa surface process deliver:
• Enhanced wettability and deposit resistance without inhibiting oxygen or fluid transport.
• High oxygen transmissibility for healthy, white eyes.
• Reduced risk of hypoxic stress to help maintain excellent ocular health.

	The lens is bombarded with electrically excited gas molecules that transform the hydrophobic silicone of the lens surface into hydrophilic silicate.
	Unlike a coating, Performa surface process is inherent in the matrix of the lens so it does not rub off. AerGel silicone hydrogel material combined with Performa surface process controls hydration dynamics and facilitates transport for dehydration resistance.
	In addition, rounded edge profile facilitates smooth interaction between conjunctival tissue and edge of lens for easy movement and all-day comfort.

PureVision® Multifocal

Excellent visual quality in the critical distances ranges (between 40 and 120 cm)
thanks to the smooth profile of transition, which was already proven reliable on the Bausch & Lomb soflens multifocals.

Material

Material:	Balafitcon A (silicone-hydroqel)
Water Content:	36 %
Oxygen Transmission* (Dk/t) at -3.00D:	112 (Non-Edge Corrected)   101 (Edge Corrected)

Design

Visit Our  SPONSOR