Complex sentence: Retinal ganglion cells convey information from the photoreceptors up the optic nerve to the pretectal nucleus of the high midbrain, bypassing the Lateral Genicular Nucleus and the primary visual cortex.
Split into simpler sentences: Retinal ganglion cells convey information from the photoreceptors up the optic nerve to the pretectal nucleus of the high midbrain. Note that these axons bypass the Lateral Genicular Nucleus and the primary visual cortex.