Macular edema eye can result in improved visual outcomes for patients with chronic or refractory diabetic macular edema. Macular edema Macular edema occurs when fluid and protein deposits collect on or under the macula of the eye (a yellow central area of the retina) and causes it to thicken and swell (edema). The swelling may distort a person's central vision, because the macula holds tightly packed cones that provide sharp, clear, central vision to enable a person to see detail, form, and color that is directly in the centre of the field of view. The causes of macular edema are numerous and
Cerebral edema such as ischemic stroke, cancer, or brain inflammation due to meningitis or encephalitis. Vasogenic edema caused by amyloid-modifying treatments, such as monoclonal antibodies, is known as ARIA-E (amyloid-related imaging abnormalities edema). The blood–brain barrier (BBB) or the blood–cerebrospinal fluid (CSF) barrier may break down, allowing fluid to accumulate in the brain's extracellular space. One manifestation of this is P.R.E.S., or Posterior Reversible Encephalopathy Syndrome. Altered metabolism may cause brain cells to retain water, and dilution of the blood plasma may cause excess water to move into brain cells. Fast travel to high altitude without proper acclimatization can cause high-altitude cerebral