noun. limited or full-blown lessening of vision capabilities without having proof of biological abnormalcy of the impacted eye ball or eyeballs. The antecedent is usually destruction to the ocular nerve or the human brain. The health problem might be genetic, as in Eber

AMAUROSIS: “Neurological damage with no trace of damage to optic regions led the doctor to believe amaurosis was the culprit of Teddy’s vision loss.”