It's not unusual for shingles on the forehead to affect the eyes. The virus spreads through the nerves.
There are four pairs of sinuses in the human body: frontal sinuses (in the forehead), maxillary sinuses (cheekbones), ethmoid sinuses (between the eyes), and sphenoid sinuses (behind the nose).
The maxillary sinuses are in the maxillary bones under the eyes. The frontal sinuses are in the frontal bone of your forehead. The ethmoid sinuses are in the ethmoid bone between the nose and the eyes. And the sphenoid sinuses are are in the sphenoid bone at the center of the skull base, below the pituitary gland.
The sinuses help to lighten the skull, provide resonance to the voice, insulate sensitive structures like the eyes and brain, produce mucus to trap foreign particles, and humidify and filter the air we breathe.
The paranasal sinus is behind your nose and cheeks. http://www.cancerbackup.org.uk/Cancertype/Headneck/Typesofheadneckcancers/Paranasalsinuscancer The medical term for it is called the maxillae
The frontal sinuses are located in the forehead, just above the eyes and behind the eyebrows. They are part of the paranasal sinus system and are lined with mucous membrane that helps humidify and filter the air we breathe.
dural sinuses, cerebral sinuses, or cranial sinuses
Paranasal sinuses are a group of four air-filled spaces. Maxillary sinuses surround the nasal cavity, frontal sinuses are above the eyes, ethmoid sinuses are between the eyes and sphenoid sinuses are behind the eyes.
The paranasal sinuses (which surround the nose) are found in the following bones: frontal, ethmoid, sphenoid, and maxillary. The maxillary sinuses are the largest of all sinuses. There are also sinuses found near the mastoid process of the temporal bone called the mastoid sinuses. The mastoid sinuses communicates with the inner ear, whereas the paranasal sinuses communicate with the nasal cavity.
The frontal sinuses housed in the frontal bone are the largest sinuses.The maxillary sinuses are the second largest.
Sinuses
If you have a headache just about your eyes, it is very likely that it is your sinuses. Sinus pressure can be very painful.
The superior sagittal sinus, straight sinus, and right and left transverse sinuses meet in a structure known as the confluence of the sinuses