Assertion: tuatara's eye | /r/MadeOf | retina
Facets:
Source sentences:
text: Other lizards also have this "third-eye," which contains a retina and is functionally similar to a normal eye, though the function has not been clearly recognized and a scale grows over it in adult tuataras.
text: Tuataras also have what is generally called a 'third eye' which contains a retina and works like a normal eye; the reason for this eye is not fully understood, maybe as an overhead view when predators come so that the tuatara doesn't have to move in order to look at the predator, nevertheless a scale grows over it when the tuatara reaches maturity.
text: The eye contains a simplistic lens and retina and is connected to the brain by a nerve.