Brains II

From eyes to visual cortex the optic chiasm closely huggs below the thalmus which has a posterior bump to sample some of the optical input. That in turn goes to a more medial bump superior colliculus in the most forward brainstem mid btain.Information is passed to the medial longitudinal fasciculus (the mess of goobers seen above (within the brainstem). This has the job of coordinating eye focus and convergence on what is of interest. This complexity underpins “blind sight” where a totally blind person can startle at something not seen but somehow sensed.