Color deficiency is usually inherited, but can also result from certain diseases, trauma or as a side effect of certain medications. It happens when the color-sensitive cone cells in the retina of your eye do not properly pick up or send to the brain correct color signals.

Color deficiency occurs when your ability to distinguish certain colors and shades is less than normal. The term "color blind" is often used, but usually incorrectly. Only a very small number of people are completely unable to identify any colors. There are two major types. Red-green deficiency is by far the most common and results in the inability to distinguish certain shades of red and green. Blue-yellow deficiency is less common and affects the perception of blue and yellow colors.

Side effects with Nascobal are generally mild and primarily related to the site of application. The following side effects were judged to be of "possible" relationship to Nascobal: Absence of intrinsic factor, also called pernicious anemia — Intrinsic factor is a protein secreted by cells of the stomach lining. Intrinsic factor attaches to vitamin B12 and takes it to the intestines to be absorbed. An absence of intrinsic factor is the most common cause of pernicious anemia.

What you actually see is the color of the blood running through the veins. The veins themselves are white.

Color Vision deficiency could be acquired too. Certain drugs prescribed for arthritis, depression, heart disease, high blood pressure, diabetes, multiple sclerosis, and some liver diseases can significantly affect color vision either temporarily or permanently. Continued use of aspirin can also alter color perception. Excessive use of tobacco and alcohol can have similar effects. Many industrial chemicals can permanently alter your color vision.

It depends upon the kind of job you do. Certain jobs, such as printing inks, textiles, and paints etc. require a precise perception of color. Because of your limited ability to recognize colors accurately, your performance at these jobs may be affected.

Generally, color deficient people are not denied a driving license. However, remember that a person with color blindness may drive through a red traffic light and cause a fatal accident. Driving laws in certain places are more strict and may limit color blind people from driving heavy commercial machinery.

No, there are no treatments available to correct your inherited color vision problems. Nothing can be done to replace a defective mechanism in your retina. Many color defective people learn how to compensate for this defect in their vision. It is important that good lighting is always available. Many people find limited help in identifying certain colors with the help of a small red or red-mauve filter held in front of the eye.

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.

There are several. Red-green deficiency is by far the most common and results in the inability to distinguish between certain shades of red and green. In very rare cases, color deficiency exists to an extent that no colors can be detected. This person sees all things in shades of black, white and grey.

People who are color deficient are generally unaware of their condition. They assume that everyone sees things the way they do. As a result, a complete optometric examination, including a test for color vision, is recommended. The test for color deficiency is a relatively simple one, typically involving the viewing of a series of colored designs. The designs have been created in such a way that a person with normal color vision can see certain figures in the designs.

Every child should be checked for color deficiency by at least age five. It is important to detect color deficiency early because color coded learning materials are used extensively in the primary grades. In addition, color deficiency may affect the career path of an individual, since the ability to distinguish colors is an important aspect of some jobs, such as pilots, electricians, some military personnel, police officers and others.

In adults, GH deficiency may often result when the pituitary gland becomes diseased or damaged. Particular tumors of the pituitary gland (pituitary adenomas), physical injury to the brain (hemorrhage, trauma, surgery), or radiation therapy can all injure the pituitary gland severely enough to cause GH deficiency. In the U.S. approximately 50,000 adults have GH deficiency and 6,000 new cases of adult GH deficiency are diagnosed each year.

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.

About 8-10% of all men have difficulty distinguishing between certain colors. This does not mean that affected individuals see only black and white, or that colors are invisible to them. In the most common type of color vision deficiency, commonly known as color blindness, individuals have a hard time distinguishing certain shades of red and green. This type of color vision deficiency is inherited as an X-linked trait.

Possibly yes. Colored objects are frequently used in teaching and learning processes. If you know that your child has difficulty in identifying certain colors, it will be a good idea to inform your child’s teachers accordingly.

Magnesium deficiency is caused by insufficient intake with food, reduced absorption in the intestines and early elimination through the kidneys and skin. For years many scientists have been warning that magnesium is increasingly being leached out from the soil and consequently plants will contain less and less of it. As a result, there is less magnesium present in the diet of animals – and therefore also in the human diet.

Iron deficiency anemia is caused by low levels of iron in the body. Low iron levels can occur because of: Bleeding caused by conditions such as ulcers, hemorrhoids, cancer, or regular aspirin use. People with these conditions may not be aware that they are losing blood. This type of bleeding is the main cause of iron deficiency anemia in men and in women past menopause. Lack of iron in the diet.

In order to understand what causes G6PD deficiency, one must first learn a bit about genes and chromosomes. Genes are like the body's blueprints. They contain instructions on how specific parts of the body are made. For example, if the isntructions in your hair genes say your hair is black, your hair will be black. Genes are packaged into threadlike structures called chromosomes. A chromosome is very much like a beaded bracelet.

There is no convincing evidence to suggest that increased levels of any vitamin will be beneficial. It has been known for many years that a deficiency of Vitamin A will cause symptoms similar to RP but there is no firm evidence that an increased intake of Vitamin A, beyond that contained in a normal diet, will be beneficial to RP and it may cause problems with other body organs. Further extensive tests on vitamin intake are currently in hand. Back to Top

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.

c. Use white chalk, not colored chalk, on the board to maximize contrast. Avoid yellow, orange, or light tan chalk on green chalkboards. d. Xerox parts of textbooks or any instructional materials printed with colored ink. Black print on red or green paper is not safe. It may appear as black on black to some color deficient students. e. Assign a classmate to help color deficient students when assignments require color recognition. Example - color coding different countries on a world map. f.