What happens to the energy of photons that land in the retina?

When photons land in the retina of the eye, what happens to the energy that they're carrying? Is all of it used up in changing the shape of the photosensitive proteins in the retina or is some of it dumped as heat into the tissues?

Similarly, does anyone know what happens to the energy of photons that land on a leaf? Is all of it captured by the chlorophyll or is some lost to heat?

Thanks!