PureVision2 Multi-Focal
MultifocalMonthly
- BC
- 8.6
- Dia
- 14.0
- Dk
- 91
- H₂O
- 36%
- Power
- +6.00 to -10.00
Power Range
+6.00 to -10.00
Modulus
1.1 MPa
CT @ −3.00D
0.07mm
Extended Wear
1 Month
Material
balafilcon A
IonicSilicone Hydrogel
Availability● Available
Pack Sizes6
Available Powers
SPH: +6.00D to -10.00D (0.25D steps)
ADD: LOW (+0.75D to +1.50D), HIGH (+1.75D to +2.50D)
Design Notes
Optics
Front surface asphere consisting of multiple aspheric zones over a spherical base curve, with the most plus power in the center of the lens progressing to more minus in the periphery.
Add
Two strengths, Low +0.75D to +1.50D and High +1.75D to +2.50D.
Material
Balafilcon A, a copolymer of a silicone vinyl carbamate, N-vinyl-pyrrolidone, a siloxane crosslinker and a vinyl alanine wetting monomer.
Surface
Performa surface treatment, which transforms hydrophobic silicone to hydrophilic silicate.
Visibility tint
Blue, from up to 300 ppm of Reactive Blue Dye 246.
Note
The clinical results published for this lens were obtained with the PureVision contact lens, which has the same lens material but a different lens design.
Tint
Blue visibility tint.
Initial Fitting Guide
| Spectacle Add | Lens Selection |
|---|---|
| +0.75D to +1.50D | LOW OU |
| +1.75D to +2.50D | HIGH OU |
Troubleshooting — Poor Near
| Condition | Action |
|---|---|
| Wearing two LOW | Replace Non-Dom with HIGH. If still poor, add +0.25D to Non-Dom. |
| Wearing two HIGH | Add +0.25D to Non-Dom. |
Troubleshooting — Poor Distance
| Condition | Action |
|---|---|
| Wearing two LOW | Replace Dom with single vision lens. |
| Wearing two HIGH | Replace Dom with LOW. |