Onset of anisocoria: Old patient photographs often help to date anisocoria that is unaccompanied by other symptoms. Physical. Key aspects of the physical examination (eg, pupil size in light, pupil size in the dark, pupil reactivity to light and dark) help to localize the problem. Additional historical features such as pain, diplopia, ptosis, numbness, ataxia, dysarthria, or weakness help generate a differential diagnosis.
Mount Agung last erupted in 1963 (see information box in this article). This was one of the largest 20th century eruptions anywhere in the world. Historical eruptions of the volcano are poorly recorded, but there was certainly one in the 1820s.
Krakatoa erupted because of a volcanic plug in the volcano. A big mass of molten lava putting more and more Pressure on the plug until in August 1883 when the volcano exploded after a big cloud of ash spread for miles.he eruption destroyed two-thirds of the island of Krakatoa. August 26, 1883. That was the last massive eruption of Krakatau/Krakatoa. It still erupts quite often.