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| PureVision |
| By eyeTopics Review Editor |
Published
04/3/2006
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Contact Lens Reviews , Monthly Disposable Contacts , Bausch and Lomb
| Unrated
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PureVision
PureVision contact lenses are monthly disposable lenses designed by Bausch and Lomb to be discarded after a month of wear. Select patients will be able to wear PureVision disposable lenses continuously for up to a month, depending on advice from their eye care practitioner. PureVision lenses are made using an optical design to correct spherical abnormality to give you optimum vision. To assist you in locating your lenses in the solution, PureVision contacts are made with a light blue tint.
Lens Material
The lens material, balafilcon A, is a copolymer of a silicone vinyl carbamate, N-vinyl-pyrrolidone, a siloxane crosslinker and a vinyl alanine wetting monomer, and is 36% water by weight when immersed in a sterile borate buffered saline solution.
| Lens Parameters | | | Chord Diameter: | 14.0mm | | Center Thickness: | 0.09 mm at-3.00D | | Base Curves: | 8.6mm | | Power: | -10.00D to +6.00D, in 0.50D steps | | | -6.50D to -10.00 | | Approved Power Range: | -25.00D to +25.00D |
Lens Properties | | | Specific Gravity: | 1.064 | | Refractive index: | 1.426 | | Light Transmittance: | C.I.E. value - at least 95% | | Water Content: | 36% | | Oxygen Permeability: | 91 x 10-11[cm3O2(STP) x cm]/(sec x cm2 x mmHg) @ 35 degrees C Polarographic Method (Boundary and Edge Corrected) | | | 101 x 10-11[cm3O2(STP) x cm]/(sec x cm2 x mmHg) @ 35 degrees C Polarographic Method (Boundary Corrected, Non-Edge Corrected) |
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Select patients will be able to wear PureVision disposable lenses continuously for up to a month, depending on advice from their eye care practitioner.
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