No, not at all.
You can become color blind at any age.
If not treated the person can die and infect others as well.
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.
Isaac the Blind died in 1235.
Blind Harry died in 1492.
Mathilde Blind died in 1896.
Didymus the Blind died in 398.
Blind Roosevelt Graves died in 1962.
Blind Joe Reynolds died in 1968.
Ferdinand Cohen-Blind died in 1866.
Blind Simmie Dooley died in 1961.
Blind Joe Hill died in 1999.