Patient Care
FL-41: New scientific validation for "Rose-colored glasses"
What is FL-41? | FL-41 Research History
Q:
How does FL-41 work?
A:
Although we are not really sure why FL-41 improves light sensitivity, it likely has something to do with the wavelengths of light that are filtered out. FL-41 filters out certain wavelengths of blue and green. These colors are thought to be particularly bothersome to patients with light sensitivity. By blocking these wavelengths of light, this filter also improves contrast and sharpness which increases visual acuity.
Q:
Can FL-41 filter be added to any glasses?
A:
FL-41 filter is best absorbed by the regular (cr-39) plastic lens material. Applying the filter to polycarbonate lenses proves to be more difficult but can be done in most cases. If the lenses are glass or have the anti-reflective coating on them they cannot have the filter applied.
Q:
If my glasses are already tinted, can FL-41 be added?
A:
FL-41 can sometimes be added to lenses that have already been tinted. Occasionally the original tint has to be removed in order for the lens to absorb the FL-41 filter.
Q:
How much does it cost to add the FL-41 filter to my existing glasses?
A:
Applying the FL-41 filter to existing lenses typically costs $35.00.
Q:
Does insurance cover the cost of FL-41 filter?
A:
Most insurance plans, including Medicare, do not cover the cost of adding tint to lenses. However, there may be exceptions, so contact your individual healthcare provider.
Q:
Are there any side effects from wearing FL-41 filter?
A:
There are no known side effects from using this filter.
Q:
Can the filter be worn indoors or outdoors?
A:
If you want to wear FL-41 indoors and outdoors, we can apply the filter to separate pairs of glasses so that you can have a dark pair for outdoor wear and a light pair for indoor wear.
Q:
Where can I get FL-41 filter?
A:
The Moran Eye Center in Salt Lake City, UT can apply this filter to either your existing glasses (see section 2) or can create a new set of glasses for you with the filter built in. When applying this filter to your existing glasses the filter will be applied and returned to you within 10 days. If you would like a new set of glasses made please call (801)587-3765 to discuss what information needs to be obtained as well as the cost.
Q:
What if I don't like the filter?
A:
The tint can be removed from your lenses if for any reason you don't like it. However, if your lenses have had the darker filter applied it may not be possible to remove it 100 percent. There is an additional charge for removing the filter