The human eye has a point that lacks photoreceptor cells. This is identified as:

The blind spot (optic disc) is the point on the retina where the optic nerve exits the eye and connects to the brain. This region lacks photoreceptor cells (rods and cones), so any image formed at this point cannot be detected, hence the name 'blind spot.' The fovea is the central part of the macula in the retina that contains the highest density of cone cells and provides sharpest vision. The orbit is the bony socket in the skull that houses the eyeball. 'Dark spot' is not a standard anatomical term for the eye.