This doctrine of “five kinds of eyes” and “three bodies of a Buddha” cannot be found anywhere except in the Lotus Sūtra. Therefore, Grand Master T’ien-t’ai states in his Words and Phrases of the Lotus Sūtra, fascicle 9, “A Buddha has been equipped with the ‘three bodies’ always throughout the past, present, and future existences, but the Buddha concealed it in various sūtras except the Lotus Sūtra.” In this interpretation, “various sūtras” refer to not only the Flower Garland Sūtra, the Hōdō sūtras, and the Wisdom Sūtra but also all the sūtras except the Lotus Sūtra. “The Buddha concealed it” means Lord Śākyamuni Buddha did not expound it anywhere except in the “Lifespan of the Buddha” chapter of the Lotus Sūtra. Therefore, the opening the eyes service for a Buddhist portrait or statue must be performed with the Lotus Sūtra by the Tendai (T’ien-t’ai) School of Buddhism.

Shijō Kingo Shakabutsu Kuyō-ji, Opening the Eyes Service of Shijō Kingo’s Statue of Śākyamuni, Writings of Nichiren Shōnin, Volume 6, Followers I, Page 131-132