  We take another look at the equations behind the description of light bending
in a Universe with a cosmological constant. We show that even within the impact
parameter entering into the photon's differential equation, and which is
defined here with exclusive reference to the beam of light as it bends around
the central mass, lies the contribution of the cosmological constant. The
latter is shown to enter in a novel way into the equation. When the latter is
solved our approach implies, beyond the first two orders in the mass-term and
the lowest-order in the cosmological constant, a slightly different expression
for the bending angle from what is previously found in the literature.
