Color blindness testing is the inability of the eyes to distinguish colors. Color blindness is reported to be more common in men than in women. Color blind individuals do not see objects or objects as colorless. Some see colors as faded, while others see colors as distinct. The most common type of color blindness is the confusion between red and green. People with color blindness are often unaware of their color blindness. Therefore, a color blindness test performed by an ophthalmologist can diagnose color blindness. Because color blind individuals are unable to recognize their color blindness, they can encounter difficulties in applying for positions such as driver's licenses, police positions, and the military. Therefore, it is beneficial to take a color blindness test before the interview.

The Book of Ishiara