No, not at all.
You can become color blind at any age.
If not treated the person can die and infect others as well.
Didymus the Blind died in 398.
Mathilde Blind died in 1896.
Blind Harry died in 1492.
Isaac the Blind died in 1235.
Ebola is still around and most people die from it. There is no cure at this point. If the sick person is caught in time he or she can be isolated and treated, but the disease is very contagious.
Blind Roosevelt Graves died in 1962.
Blind Joe Reynolds died in 1968.
Louis the Blind died on 928-06-28.
Blind Alfred Reed died in 1956.
Blind Tom Wiggins died in 1908.