For 30 years, the Berlin Wall was the defining symbol of the Cold War, separating families and keeping the people from jobs and opportunity in the west. 1  Print. 2  Cite Article Details: Berlin Blockade Author History.com Staff. Website Name History.com.
Fundus, retinal: The interior lining of the eyeball, including the retina (the light-sensitive screen), optic disc (the head of the nerve to the eye), and the macula (the small spot in the retina where vision is keenest).he fundus is the portion of the inner eye that can be seen during an eye examination by looking through the pupil. Fundus is the Latin word for the bottom. In medicine, fundus refers to the bottom or base of an organ.
Corneal arcus, or arcus senilis, is most often an involutional change modified by genetic factors. However, arcus is sometimes indicative of a hyperlipoproteinemia (involving low-density lipoproteins) with elevated serum cholesterol, especially in patients under 40 years of age (see Chapter 11). It can be a prognostic factor for coronary artery disease in this age group. Arcus occurs occasionally as a congenital anomaly (arcus juvenilis), usually involving only a sector of the peripheral cornea and not associated with abnormalities of serum lipid. Arcus is a deposition of lipid in the peripheral corneal stroma. It starts at the inferior and superior poles of the cornea and in the late stages encircles the entire circumference. The incidence is 60% in individuals between the ages of 50 and 60; it approaches 100% in individuals over 80.