The cerebrum, which is the largest part of the brain, is divided into two hemispheres--the left hemisphere and right hemisphere. Each hemisphere has all four lobes of the brain--frontal lobe, parietal lobe, temporal lobe and occipital lobe--but...
Brain tumors can affect the optic nerve itself and the cranial nerves that control eye movement. Tumors in different parts of the brain affect different nerves and often affect several nerves at once. According to "Adams and Victor's Principles of...
Eye movement is controlled by three cranial nerves and several central gaze centers. Disorders of the nerves or gaze centers can lead to diplopia, or double vision. Disorders that affect the eye muscles or the neuromuscular junction can also cause...
There are two distinct kinds of cells in the eyes, the cones and the rods. The cones are the cells which are responsible for transmitting color vision to the brain. As InnVista explains, there are three different kinds of cones: green absorbing,...
Sight is a complex function of the brain that extends from the front to the back of the head. To produce sight, the eyes capture information and send it through the optic nerve to be processed by the occipital lobe. The brain also incorporates...
Smoking can damage many organs, including the eyes, which are complex organs that are effected from first and secondhand smoking. Individuals experience many different effects on their eyes from cigarette smoking. Eyes are affected by the...
A pituitary tumor can cause a disease called acromegaly. People with this disease will not only develop thick bones, but acromegaly can lead to several complications as well. The thickened bones can lead to carpal tunnel syndrome. The size of the...
