Why did my sons eyes change color? At 9 or 10 yrs old after a high fever, my dark brown eyed sons' eyes changed color to hazel and sometimes pale green. Now 12, his eyes still are hazel. Summertime they seem greener. Have you read about fevers permanently

Fever. The fever did not change your child's eye color. The appearance of eye color can change over time and with lighting/ background/ etc.
I . I am not aware of a fever being responsible for a change in eye color. I do know that eye color can change with age. This occurs in about 10 to 15 percent of the caucasian population. If you have further questions you can visit your son's doctor and/or an eye doctor (ophthalmologist).