<unk>  (also cyclocephaly or synophthalmia) is a rare form of holoprosencephaly and is a congenital disorder (birth defect) characterized by the failure of the embryonic prosencephalon to properly divide the orbits of the eye into two cavities. Its incidence is 1 in 16,000 in born animals, and 1 in 250 in embryos.
Cyclopia
Myopia
Hyperopia
Amblyopia
Asthenopia
Blurred vision
Tinnitus
Presbyopia