Mackenzie mentions cases in which the orbit was more or less completely wanting and a mass of cellular tissue in each eye.
Cases of living cyclopia, or individuals with one eye in the center of the forehead after the manner of the mythical Cyclops, are quite rare.
Vallentini in 1884 reports a case of a male cyclopic infant which lived for seventy-three hours.

There were median fissures of the upper lip, preauricular appendages, oral deformity, and absence of the olfactory proboscis The fetus was therefore a cyclops arrhynchus, or cyclocephalus.

Blok describes a new-born infant which lived for six or seven hours, having but one eye and an extremely small mouth.
The "Four-eyed Man of Cricklade" was a celebrated English monstrosity of whom little reliable information is obtainable.

He was visited by W.
Drury, who is accredited with reporting the following-- "'So wondrous a thing, such a lusus naturae, such a scorn and spite of nature I have never seen.

It was a dreadful and shocking sight.' This unfortunate had four eyes placed in pairs, 'one eye above the other and all four of a dull brown, encircled with red, the pupils enormously large.' The vision in each organ appeared to be perfect.