People with color blindness, sometimes called color vision deficiency (CVD), are unable (or have decreased ability) to see color and color differences under normal lighting and viewing conditions. The condition affects a significant portion of the population and is actually more common than many people realize.
Different Types Of Color Vision Deficiency
In optometry, color blindness is categorized depending on the types of colors that a person has trouble seeing. For example, there is red/green, blue/yellow and total color blindness (which means that a person does not perceive colors at all – merely shades of grey). Over 99 percent of people with the condition have trouble distinguishing between red and green colors with over 75 percent of those people mainly have trouble seeing green colors. The condition of blue/yellow color blindness is quite rare while those who cannot perceive any color at all (known as achromatopsia) is rarer still.
What Is It Like To Be Color Blind?
Most children are scanned for color blindness in school using the Ishihara test which consists of disks made up of colored dots in which numbers and lines are shown in different colors with children being asked if they can see them to determine whether they have the condition. The tests are also available online and provide a useful first step (or signal to see an optometrist) for people that need help with the condition.
Color blindness is a hereditary condition and there is no cure for the condition so in many cases therapy relies on learning coping strategies or focusing on other cues to help with color recognition. For instance, people with CVD learn to read traffic lights depending on the position of the light among other color identification techniques. In some cases patients can be prescribed corrective contact lenses that can help with their condition. In fact color blindness, or CVD, need not be serious impediment to those who suffer from the condition and your optometrist can recommend solutions to help with the most common types.
The general public is relatively uninformed about this condition with many believing that color blindness means that people cannot see any colors at all. In reality the condition refers to people’s ability to see the intensity of certain colors across a broad spectrum of severity. Many optometrists would prefer the word ‘blindness’ to be removed from the definition of the condition altogether and would prefer a phrase such as ‘Color Spectrum Differentiation’ which more closely describes what people with this condition experience.
If you believe that you or a loved one has color vision deficiency, please call us today to schedule a comprehensive eye exam. We are committed to providing each patient with quality vision care and solutions. Our staff prioritizes to the value of offering excellent service, care, and products through friendly, positive and professional teamwork.