Heart or blood vessel problems that can cause chest pain: 1  Angina or a heart attack. 2  A tear in the wall of the aorta, the large blood vessel that takes blood from the heart to the rest of the body (aortic dissection) causes sudden, severe pain in the chest and upper back.
Hemianopsia is a loss of vision in half of the visual field of one eye or both eyes. Common causes are stroke, brain tumor, and trauma to the brain. Normally, the left half of the brain receives vision from the right eye, and vice versa....
Thalamus Damage: Damage to the thalamus may result in a number of problems related to sensory perception. Thalamic syndrome is condition that causes an individual to experience excessive pain or a loss of sensation in limbs. Damage to areas of the thalamus that are associated with visual sensory processing can cause visual field problems.