金剛經纂要刊定記 6.38

6.38

前四等者。佛有此眼，故云佛眼。以前二眼通凡夫，二乘無法眼，菩薩雖具且劣，若在於佛四皆殊勝，總名佛眼。是則佛眼之外無別四眼也。其猶四河歸海失本名耳。

Regarding "the previous four," and so forth: the Buddha possesses this eye, hence it is called the Buddha eye. Because the first two eyes are shared with ordinary beings, the two vehicles lack the Dharma eye, and bodhisattvas, though possessing it, are still inferior; when present in the Buddha, all four are supremely extraordinary and collectively named the Buddha eye. Thus, outside of the Buddha eye, there are no four separate eyes. It is just like the four rivers flowing into the sea and losing their original names.