1. Why Compensating Color
Vision Deficiency (CVD) is Important?
Vision is the most important human sensor: 90%
of all information received is via vision, 5%
via hearing, 2% touching, 2% tasting, 1% smelling.
The loss of information due to inadequate color
decoding prevents or slows down comprehension,
increases reaction time and generally lowers the
quality of life. Normal color vision individuals
are able to distinguish more than a million different
shades of colors. Meanwhile an average color vision
deficient person only a couple of thousands and
a more serious patient only a few hundreds. This
may result that a CVD person does not realize
if his partner blushes or gets pale during a conversation,
cannot notice if a child has fever just by his
face color, cannot distinguish between ripe and
unripe fruits etc. notices disadvantages in almost
all areas of life compared to people with normal
2. What should I absolutely
know about Colorlite Correction system?
Clinical trials prove that Colorlite's color vision
correction and enhancement lens coatings result
in significant improvement in 90% of color vision
deficiency (CVD) cases. Objective tests like Ishihara
plates or computer controlled color vision tests
demonstrate the improvement, but only 25% of the
subjects are convinced right away of the Colorlite
lens coatings' positive effect. (See Chapeter
4. Patient should know).
3. What is the difference
between color blind and color deficient?
The human eye can simultaneously detect three
primary colors, red green and blue. All other
colors are obtained by through the mixing of the
three primary colors. In the case of color deficiency
one or more primary colors are not detected in
the normal way, while people who are color blind
see shades of gray only (total color blindness).
Under the most recent theory of color vision,
color blindness is recognized as an extreme case
of color deficiency.
4. Why are more men color
deficient than women?
Men are approximately16 times more likely to be
color deficient than women. Approximately 8% of
men and 0.5% of women have some degree of inherited
color deficiency (200 million people worldwide).
Red-green color deficiency is a hereditary disease,
carried by the X chromosome of females. For this
reason the daughter of a color deficient father
can pass it to her sons. Women have two X-chromosomes
and one defective X chromosome will be compensated
for by the other non-defective. The chances of
having two defective X-chromosomes are small.
5. Can color deficiency
Since color deficiency is not an acquired but
a hereditary disease, it cannot be cured according
to our present knowledge. However, improvement
by visual aids, similar to normal eyeglasses,
6. Will I develop color
deficiency as I get older or will my current color
deficiency become worse?
The severity of hereditary color deficiency does
not change during the course of life. However,
acquired forms of color deficiency, due to environmental
conditions or disease, can occur as people age.
Among the possible reasons are age-related distortions
of the retina, glaucoma, diabetes, and eye nerve
7. How does improving color
vision improve the quality of life?
Colors in the world around us carry important
information (for example: color TV, computer screens,
traffic signals) which is entirely or partially
unavailable to people with color deficiency. In
addition communication is often performed based
on color, such as providing directions, "turn
left at the green house or click on the red icon
to approve a transaction". People with color deficiency
may not be permitted to take jobs in certain areas,
and may misinterpret communication based on color.
8. How does Colorlite's test for color deficiency
differ from other color vision tests?
Many color vision tests only check a patient's
ability to discriminate between colors and or
identify certain colors. Colorlite takes a complete
diagnosis of the patient's color vision rather
than just telling which colors the patient does
not see improvely. These measurements are necessary
in order to select the appropriate glasses for
improveionof the color defeciency similar to the
way an eyecare professional would measure your
9. Can the Coloryte method
for color deficiency be applied to normal eyeglasses?
Yes, both diopter-free and diopter glasses can
10. Is the use of Colorlite's
color vision glasses restricted or regulated by
Yes, in certain countries. Law and regulations
differ by country so please contact us for a specific
answer. Certain countries require that Coloryte's
products be approved by Government authorities
prior to sale. Accordingly, Coloryte's products
may not be available in all countries until the
required regulatory approvals have been obtained.
11. How can I find out
if Coloryte's glasses can improve my color vision?
After diagnosing your type of color deficiency
with Coloryte's special method, You can try on
a pair of sample glasses and see the difference