Human CYCLOPIA does exist and every rare instance of such birth, strongly captures attention as evident from the ample mythology that arose to "explain-out" such events. Cyclopia in a narrow sense (cycle circular) denotes "round eye" - a more correct but less popular is the term "synopia", denoting fully or partially fused optic vesicles. 

Even in the 20th. century, medical texts referred to cyclopic infants, like others with severe malformations, as "monsters or monstruosities", a word implying "demonstration", a wander, an expression of divine power. In "civilized" "western" Europe, Biblical religious interpretations expanded "monster" to imply that such infants were the offspring of the "Devil" or that their mothers consorted with animals thus were guilty of "bestiality". In any case, many such unfortunate mothers and infants were found "guilty" and executed.