Fitting Guides > Platinum Eye
Fitting Guides
Platinum Eye ™ Multifocal
Fitting Guide
- Valley Contax offers the best choice among progressive Multifocal lenses for today's presbyopic population.
- The Platinum Eye™ Multifocal is a simultaneous aspheric design.
- Recommended in Boston XO.
The Platinum Eye™ provides ultimate comfort, stability and acuity at near, intermediate and distance. It offers add power up to 3.00 D and accurate correction up to 1.75 D of corneal astigmatism and attainable distance VA of 20/20.
The fitting for the Platinum Eye™ Multifocal is simple
and sure.
The aspheric measurements are designed to provide optimal corneal
alignment when fit to given specifications. Platinum Eye™ functions
as a stepping-stone for creating add power from center to edge. Platinum
Eye™utilized the front enhancements feature without
altering the original Golden Eye™ fit. Platinum Eye™ and
Golden Eye™ are recommended in Boston XO™ and
available in all color choices.
Platinum Eye™ and Golden Eye™ are the preferred
Multifocal exclusively from Valley Contax.
That means Valley Contax has complete and ultimate parameter control
for quality and reproducibility. Purchase Platinum Eye™ and Golden
Eye™ Multifocals
with the Valley Contax Failsafe Warranty (credit is issued for
up to three lenses per eye. Each credit is charged a button recovery
fee or you may choose to order unwarranted.
The Platinum Eye™ and Golden Eye ™ are available exclusively from Valley Contax in a wide range of parameters:
Base Curves: Any base curve radius
Powers: Made to order
Diameters: Suggested sizes - 9.2 through 9.8
Edge Lift:
| Platinum Eye™ A | 10% less edge lift than standard |
| Platinum Eye™ B | Standard edge lift |
| Platinum Eye™ B | 10% - 15% more edge lift that standard |
| Parameter Selection |
| Corneal Cylinder | Base Curve (Steeper than flat K) |
Power (Add to distance spectacle) |
| 0.00 to 2.00D | 1.75D steeper | add -1.75 |
| 2.25D | 2.00D steeper | add -2.00 |
| 2.50D | 2.25D steeper | add -2.25 |
| (Platinum Eye™ C) |
| Base Curve | Diameter |
| 7.10 and steeper | 9.2 |
| 7.20 to 7.50 | 9.4 |
| 7.60 to 8.00 | 9.6 |
| 8.10 and flatter | 9.8 |
Lens Fitting
| Centration is important. The over-refraction is valid only when the lens centers well. | |
| 1. | Lens should be well centered with mid-peripheral alignment and slight central pooling. |
| 2. | With lens centered, check distance acuity monocularity. Over-refract if necessary in 0.25D steps using hand held lenses to 20/20. |
| 3. | Check distance acuity binocularly. Over-refract if necessary in 0.25D steps using hand held lenses to 20/20. |
| 4. | Check near acuity with distance over-refraction still in place. If near vision has been compromised, add +0.25D to the non-dominant eye. |
| Problem solving techniques | |
| 1. | A decentered lens may require a steeper base curve of at least 0.1 mm. |
| 2. | A superior positioning lens with too much edge lift may require a reduction of edge lift by 10% or (Golden Eye™ A). |
| 3. | A superior positioning lens with normal edge lift may require increased center thickness or steeper base curve. |
| 4. | A lens that is not positioning laterally may require a larger diameter. |
When a lens is not centered, measure the position.
Steve
President
"Valley Contax feels proud to be one of the select laboratories who have earned this prestigious award..."
"...as a reflection of the importance we place on quality."
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