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Drusen, from the German word for node or geode (singular, "Druse"), are tiny yellow or white accumulations of extracellular material that build up between Bruch's membrane and the retinal pigment epithelium of the eye. The presence of a few small ("hard") drusen is normal with advancing age, and most people over 40 have some hard drusen. [1]
Devolution, de-evolution, or backward evolution (not to be confused with dysgenics) is the notion that species can revert to supposedly more primitive forms over time. The concept relates to the idea that evolution has a divine purpose and is thus progressive (orthogenesis), for example that feet might be better than hooves, or lungs than gills.
Reverse diffusion also refers to when water is forced from a region of lower concentration to high. It can occur in osmosis . This physics -related article is a stub .
In children, optic disc drusen are usually buried and undetectable by fundoscopy except for a mild or moderate elevation of the optic disc. With age, the overlying axons become atrophied and the drusen become exposed and more visible. They may become apparent with an ophthalmoscope and some visual field loss at the end of adolescence. [7]
Saving money around the holidays seems unheard of. But there are a few approaches that can reduce the burden of expenses, such as reverse gifting. "Reverse gifting is a revolutionary approach to...
AMD can be divided into 3 stages: early, intermediate, and late, based partially on the extent (size and number) of drusen. [1] AMD-like pathology begins with small yellow deposits (drusen) in the macula, between the retinal pigment epithelium and the underlying choroid.
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After all, an orange cat can be produced from the same parents as a black or calico kitty. My tuxedo can has a flame-point brother, and their mom is a calico tabby. All of which is to say cat coat ...