Color Vision
Deficiency Correction

Frequently Asked Question

Information acout color deficiency

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 vision.


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 be cured?

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, is possible.


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 diseases.


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 vision.


9. Can the Coloryte method for color deficiency be applied to normal eyeglasses?

Yes, both diopter-free and diopter glasses can be used.


10. Is the use of Colorlite's color vision glasses restricted or regulated by law?

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 for yourself.