We often don't think about how important colors are to our lives. We take the ability to see all colors and shape our life accordingly. When we eat, wear, drink, we are actually affected by color first. Unfortunately, this is a bit different for about 180 million people worldwide. They either continue this experience partially or lose it completely. This disease, which we can classify as no loss of color, the loss of the ability to see the colors or the inability to distinguish the red-green color, significantly reduces the quality of life.
Color blindness is a disorder of the ability to distinguish colors, which is usually seen in men. A situation in which a special pigment molecule is less or less than it should be at the visual center. The most common type of this disease is the indistinguishable condition of red and green. Girls with color blindness do not become color blind, but girls are carriers. Half of the boys of bearer women are born as color blind. This disease, which occurs for hereditary reasons, may start in childhood or adolescence and progress with age. It can occur in children by being affected by high ultraviolet rays and becomes permanent.
There are many tests performed to determine the type of color vision or color blindness. One of the most common tests is the Ishihara Test. Each page contains specially colored numbers. The patient is asked to read in a place without illumination problems. If there is a deficiency even in one color, detailed tests should be done. It is important that tests are performed by ophthalmologists.
Those who do not have a problem such as color blindness can distinguish 10,000 colors, while color blinds can only distinguish around 2000 colors. There is no known cure for this disease, but vision defects can be largely corrected with special lenses.
Types of color blindness;
• Red color blind condition due to red conical receptors “Protonopia”
• Color blindness state due to green conical receptors “Deuteranopia”
• The state of color blindness due to blue conical receptors is “Tritonopia”.
ChromaGen lenses, the only lens approved by the American Food and Drug Administration (FDA), are manufactured by the British Cantor + Nissel firm. In addition to color blindness, these lenses, which are beneficial in patients with dyslexia who lack academic ability and reading difficulties, have received quite positive feedback. ChromaGen diagnostic system is needed to evaluate the patient's color blindness or dyslexia. It consists of a contact lens trial set in the same color as 25 filters in this system. It has different options to provide the best performance in terms of tint diameter and color density.
Purposes of Using Chromogen Lenses:
• Strengthening overall color perception
• Ensuring that the colors are seen more clearly and brightly Separating the shades of colors
• Naming colors
• To increase security
• To increase eyesight in color vision tests These lenses will not be effective for patients with color deterioration after retina or optic nerve disorder.