pineal eye

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  • noun

Synonyms for pineal eye

a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles

References in periodicals archive ?
Although the pineal eye resembles other eyes, and so seems likely to sense light, the animals show no obvious behavioral response to light falling on that organ.
While most animal species do not have a true pineal eye, the pineal gland is sensitive to light in many nonmammalian species, including birds, fish, reptiles and amphibians.
A variety of other species, including lizards, frogs and lampreys, have more or less elaborate pineal eyes.