**Hemianopsia** is a visual impairment associated with unilateral visual field impairment. This type of visual impairment is associated with damage to the middle cerebral artery, which causes partial loss of the visual field in a person. Damage can be caused by trauma, ischemia, and other diseases related to the blood supply to the brain. Treatment for hemianoptic lesions depends on their cause and may include conservative treatment, surgery, or assistive devices such as prostheses and electronic devices.
**Hemianopic quadrantal** is a hemianops that has arisen in one of the halves located in the quadrants of the head. This lesion is usually bilateral; it disrupts perception on both sides, including large areas of the face, eyes and areas around them. Perceptual impairment can be seen when two parts of the visual field are simultaneously presented that have been lost by disease. **Causes for quadrantal hemianopia** One of the causes of hemianopic quadrant is stroke (acute cerebrovascular accident). The damage can lead to inflammation, which causes neuronal cells to die. The number of cells damaged likely depends on the type of stroke, the quality of the patient's blood, and other factors. The quality and quantity of cells is thought to depend primarily on the size and number of arteries involved, given their role in oxygen transport. A blockage or rupture of the middle or posterior sciatic nerve can cause these deformities. Lack of care or medical attention to the hemianpic quadrant can create a serious vision deficiency. If left untreated, it can cause a child or adult to lose the ability to read, write, and comprehend information through