The 11,037 Buddhist temples in Japan, 66 provinces and two islands (Iki and Tsushima), all enshrine Buddhas consisting of portraits and wooden statues. Some temples existed before the introduction of Shingon Buddhism to Japan while others were established after. At any rate, these Buddhas have become Buddhas enlightened by the Lotus Sūtra, hence their eyes all should be eyes of the Lotus Sūtra as it is preached in the Sūtra of Meditation on the Universal Sage Bodhisattva cited above: “This hōdō (Mahāyāna) sūtra is the eyes of Buddhas.” Grand Master Miao-lê also states in his Annotations on the Words and Phrases of the Lotus Sūtra: “This Lotus Sūtra makes the eternal presence of the Buddha-nature the throat, the practice of the One Vehicle teaching the eye, revival of the Two Vehicles the heart, and revealing the eternal life of the True Buddha, the life.”
Kangyō Hachiman-shō, Remonstration with Bodhisattva Hachiman, Writings of Nichiren Shōnin, Doctrine 1, Page 268-269