  Chiral perturbation theory for eigenvalue distributions, and equivalently
random matrix theory, has recently been extended to include lattice effects for
Wilson fermions. We test the predictions by comparison to eigenvalue
distributions of the Hermitian Wilson-Dirac operator from pure gauge (quenched)
ensembles. We show that the lattice effects are diminished when using clover
improvement for the Dirac operator. We demonstrate that the leading Wilson
low-energy constants associated with Wilson (clover) fermions can be determined
using spectral information of the respective Dirac operator at finite volume.
