Terminology - O

The final part
of the visual pathway for vision. It is the part of the brain that does
the "seeing." It receive electrical impulses from the Retina
via the Optic Nerve. Strokes that involve the occipital lobe can cause
blindness even though the eye and its structures are functioning normally.

The nerve endings that are contained in the Retina that come together to form one large optic nerve. This nerve exits the back of the eye and connects the eye with the part of the brain that is responsible for vision. (See Eye Anatomy and How The Eye Works for more details.)

The optical center of the Lens is where maximum efficiency of vision occurs and should correspond with the optical center of your Pupil. This is NOT necessarily the center of the Lens, and its location will depend upon your frame, your interpupillary distance, and where the Lens is to sit in front of your eye.