What are the fundamentals one needs to know about ishihara plates test?

Color blindness which is often diagnosed with the help of colorblind test refers to the decreased ability to distinguish between different colors.This defect can impair a person some simple tasks like selecting the ripe fruit, understanding the traffic lights, choosing clothes etc. It makes some educational activities difficult and such persons are considered as ineligible for some jobs like police and armed services. 

Color blindness exists in 8 % of males and 0.5 % of females. It is a genetic condition that gets passed on by faulty chromosomes which can be diagnosed easily by undergoing an ishihara plates test. Most of the patients are able to see colors, but they are unable to distinguish between different colors, especially red and green. 

When the tiny cells in the retina which are known as cones are not functioning properly color vision deficiency occurs. Some optometrists conduct free ishihara plates test for their patients.In normal eyes, the cones will be able to recognize the red, blue or green light. But if these cells are faulty the patient will find it difficult to identify some shades in a color blind test. In most cases patients of ishihara plates test, the patientfinds it difficult to distinguish between red and green.Blue color blindness is also common.

For more information visit website through #Whatiscolorblindnessandhowiscolorblindtesthelpfulinfindingitout?