Megaloblastic Anemia (MGA), also known as Pernicious Anemia, is a rare blood disorder characterized by the presence of large, structurally and visually abnormal, immature red blood cells (megaloblasts). Decreased numbers and immaturity of white blood cells (leukocytes) and blood platelets (thrombocytes) may also occur.
6. Reflective Tissue: Deer have a layer of tissue in their eyes that reflect light back towards the photo-receptors. This tissue layer is called tapetum lucidum and helps deer see better during low light conditions (e.g, dusk and dawn) and makes their eyes appear to glow when reflecting light (e.g., headlights).Many other animals have this tissue layer as well.his tissue layer is called tapetum lucidum and helps deer see better during low light conditions (e.g, dusk and dawn) and makes their eyes appear to glow when reflecting light (e.g., headlights). Many other animals have this tissue layer as well.
Transitions lenses need ultraviolet radiation to change color. Most vehicles have windshields and windows with a UV filter in them therefore they do not work well in a vehicle. If you drive a lot, consider DrivewearÂ® TransitionsÂ® SOLFXâ¢ lenses, which uses new technology to react to visible light as well as to UV light. Designed specifically to meet the unique visual demands of the driving task, Drivewear is the first polarized photochromic lens to darken behind the windshield of a car.