  We study the effect of a refined electron-photon vertex on the dynamical
breaking of chiral symmetry in reduced quantum electrodynamics. We construct an
educated {\em ansatz} for this vertex which satisfies the required discrete
symmetries under parity, time reversal and charge conjugation operations.
Furthermore, it reproduces its asymptotic perturbative limit in the weak
coupling regime and ensures the massless electron propagator is
multiplicatively renormalizable in its leading logarithmic expansion. Employing
this vertex {\em ansatz}, we solve the gap equation to compute dynamically
generated electron mass whose dependence on the electromagnetic coupling is
found to satisfy Miransky scaling law. We also investigate the gauge dependence
of this dynamical mass as well as that of the critical coupling above which
chiral symmetry is dynamically broken. As a litmus test of our vertex
construction, both these quantities are rendered virtually gauge independent
within a certain interval of values considered for the covariant gauge
parameter.
