  We study paraxial beam propagation along the wedge axis of a disclinated
amorphous medium. The defect-induced inhomogeneity results in Berry phase and
curvature that are affected by the induced uniaxial anisotropy. The Berry phase
manifests itself as a precession of the polarization vector. The Berry
curvature is responsible for the optical spin Hall effect in the disclinated
medium, where beam deflection varies sinusoidally along the paraxial direction.
Its application in determining the birefringence and the magnitude of the Frank
vector is explained.
