Color blindness usually affects a person’s ability to tell the difference between shades of red and green or shades of blue and yellow. Complete color blindness, which is very rare, causes a person to see most objects in shades of gray.
Color blindness occurs when light-sensing receptors in the eye do not work properly.
If you think you have this condition, contact your doctor. Although most color blindness cannot be cured or treated, you can learn simple ways to manage your difficulty seeing color differences. Some cases of color blindness may point to another illness that will need treatment.
Last reviewedMarch 2013by Brian Randall, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.