FUL-VUE GP Multifocal Fitting Guide:
FUL-VUE GP Multifocals from Ideal Optics are simple presbyopic lenses to fit successfully.
Understanding How FUL-VUE’s Work:
FUL-VUE’s are aspheric back surface progressive lenses with the distance power set in the center of the lens. From
the center outward, the power changes in the plus direction with increased distance from center.
The lens needs to center well or can ride slightly high as would be typical with an alignment type spherical lens fit.
When the patient looks down, the lens should stay up under the upper lid to let the visual axis shift toward the lower
part of the lens and into the add area. It helps to remind new patients to keep their chin up when looking down to
read.
If the lens is riding too high or otherwise off center much, distance vision will be compromised since they will be
looking through some of the add area and the fitter will probably get a minus over refraction to improve distance
acuity. Minor over refractions can be incorporated if the fit is reasonable, but over refractions of –1.00d or more
usually indicate poor centration and the fit needs to be improved before too much minus is added.
Base Fitting Curve Selection:
Start with the Base Fitting Curve as you would a spherical lens fit based on corneal topography,
K’ readings, or previous successful spherical lens fit. FUL-VUE Base Fitting Curves come in 0.10 mm steps,
like 7.80, 7.90, 8.00 etc, which are about 0.50 diopter apart. If in doubt, choose the steeper BC.
The back surface center of the lens is steeper than the Base Fitting Curve and fluorescein evaluation should show
some central pooling with mid-peripheral alignment and moderate edge standoff. If the lens does not center well, try
the next steeper Base Fitting Curve. Remember, lens position is key to success!
Diameter Selection:
FUL-VUE diameters come in 9.0, 9.5 & 10.0 mm. Steeper corneas usually need 9.0 and flatter corneas usually need
9.5 diameters. Because of the posterior peripheral flattening, larger lenses often fit looser instead of tighter than
smaller lenses with the same Base Fitting Curve.
Distance Power Selection:
Because the back surface is steeper centrally than the Base Fitting Curve, expect lens distance power to be about
-1.25d more than the distance spectacle Rx would indicate. FUL-VUE’s can be refracted over for best visual acuity.
We recommend using trial frame lenses with room lights on instead of a phoropter with dimmed room lights because
of pupil dilation. As with any multifocals, especially on patients with higher adds, strive for best distance acuity on
the dominant eye and best near acuity on the non-dominant eye. Binocular acuity should be good at all ranges. It
helps to explain this to the patient so visual expectations are understood.
Trouble Shooting:
Solve any fit or centration problems first. Usually a steeper BC helps centration. A smaller diameter can sometimes
reduce lid influence and help center lens. Mild prism ballast can be added to high minus lenses or any lenses that
otherwise ride too high. With a good fit, distance or add powers can be varied to give best acuity.
FUL-VUE Warranty:
The FUL-VUE 90-day warranty allows 2 no charge exchanges per eye. Additional exchanges are billed at half price.
Cancellation credit is approximately 90% of original invoice price.
Call our consultants at 800.554.7353 with any questions about fitting FUL-VUE Multifocals.
FUL-VUE GP Multifocals from Ideal Optics are simple presbyopic lenses to fit successfully.
Understanding How FUL-VUE’s Work:
FUL-VUE’s are aspheric back surface progressive lenses with the distance power set in the center of the lens. From
the center outward, the power changes in the plus direction with increased distance from center.
The lens needs to center well or can ride slightly high as would be typical with an alignment type spherical lens fit.
When the patient looks down, the lens should stay up under the upper lid to let the visual axis shift toward the lower
part of the lens and into the add area. It helps to remind new patients to keep their chin up when looking down to
read.
If the lens is riding too high or otherwise off center much, distance vision will be compromised since they will be
looking through some of the add area and the fitter will probably get a minus over refraction to improve distance
acuity. Minor over refractions can be incorporated if the fit is reasonable, but over refractions of –1.00d or more
usually indicate poor centration and the fit needs to be improved before too much minus is added.
Base Fitting Curve Selection:
Start with the Base Fitting Curve as you would a spherical lens fit based on corneal topography,
K’ readings, or previous successful spherical lens fit. FUL-VUE Base Fitting Curves come in 0.10 mm steps,
like 7.80, 7.90, 8.00 etc, which are about 0.50 diopter apart. If in doubt, choose the steeper BC.
The back surface center of the lens is steeper than the Base Fitting Curve and fluorescein evaluation should show
some central pooling with mid-peripheral alignment and moderate edge standoff. If the lens does not center well, try
the next steeper Base Fitting Curve. Remember, lens position is key to success!
Diameter Selection:
FUL-VUE diameters come in 9.0, 9.5 & 10.0 mm. Steeper corneas usually need 9.0 and flatter corneas usually need
9.5 diameters. Because of the posterior peripheral flattening, larger lenses often fit looser instead of tighter than
smaller lenses with the same Base Fitting Curve.
Distance Power Selection:
Because the back surface is steeper centrally than the Base Fitting Curve, expect lens distance power to be about
-1.25d more than the distance spectacle Rx would indicate. FUL-VUE’s can be refracted over for best visual acuity.
We recommend using trial frame lenses with room lights on instead of a phoropter with dimmed room lights because
of pupil dilation. As with any multifocals, especially on patients with higher adds, strive for best distance acuity on
the dominant eye and best near acuity on the non-dominant eye. Binocular acuity should be good at all ranges. It
helps to explain this to the patient so visual expectations are understood.
Trouble Shooting:
Solve any fit or centration problems first. Usually a steeper BC helps centration. A smaller diameter can sometimes
reduce lid influence and help center lens. Mild prism ballast can be added to high minus lenses or any lenses that
otherwise ride too high. With a good fit, distance or add powers can be varied to give best acuity.
FUL-VUE Warranty:
The FUL-VUE 90-day warranty allows 2 no charge exchanges per eye. Additional exchanges are billed at half price.
Cancellation credit is approximately 90% of original invoice price.
Call our consultants at 800.554.7353 with any questions about fitting FUL-VUE Multifocals.
Ideal Optics - FUL-VUE Fitting Guide
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| Ideal Optics 2775 Premiere Pkwy, STE 600 Duluth, GA 30097-4933 PH: 800.554.7353 FX: 770.434.8291 |