For the term illumination that should not be used here, Youssef Ishaghpour specifies in his book La Miniature persane that this term in the Iranian sphere "is a mode of manuscript ornament, based on brightness and color, devoid of image: starting with beautiful copies of the Koran, adorned with Persian splendor, abstract patterns, geometric and floral. With regard to the Western miniature, Henri Focillon uses the term "vertigo of the reduction" because it gives the illusion of a painting of an easel in a small space. This is not the case for the Persian miniature, which represents in itself a different poetic space with a deliberate absence of shadow and perspective, to achieve the union of the abstract principle of ornamentation, peculiar to Islamic art. With the diffusion of light, peculiar to the beliefs of ancient Persia.