The following article aims to analyse the visual perception and the process of seeing, as presented in the poem Schliere im Auge (Ger. schlieren in the eye − optical inhomogenities in the transparent material of the eye). In his poem, Paul Celan articulates the Bewahrung function of poetry and transcendence, using terminology typical of metaphysics, medicine or phonetics. The poem features several of the many indicators of Celan’s hermetic poetry, which include: lexical conciseness, precise syntax, semantic variety, the dynamics of motion, the state of mind, cognitive ability, disturbed communication, the perception of the moment.