  Large-scale neutrino telescopes have the primary objective to detect and
characterize neutrino sources in the universe. These experiments rely on the
detection of charged leptons produced in the interaction of neutrinos with
nuclei. Angular resolutions are estimated to be better than 1 degree, which is
achieved by the reconstruction of muons. This angular resolution is a measure
of the accuracy with which the direction of incoming neutrinos can be
determined. Since muons can traverse distances of several kilometers through
media, the original muon direction can differ from the muon direction inside
the detector due to deflections by stochastic interactions and multiple
scattering. In this contribution, a recently published study of muon
deflections based on the simulation tool PROPOSAL is presented. Muons with
various energies are propagated through different media over several distances.
Data-Monte-Carlo comparisons as well as comparisons to the simulation tools
MUSIC and Geant4 are performed. Finally, the impact of muon deflections on
large-scale neutrino telescopes is discussed.
