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 Eruption, 1883 The island of Krakatau lay in the Sunda Strait, approximately 40km south of Sumatra and 40km northwest of Java.During May 1883 the island first showed signs that the eruption had begun, with a column of ash from the Perboewatan cone that reached up to 11km into the atmosphere.raKatoa Eruption, 1883 The island of Krakatau lay in the Sunda Strait, approximately 40km south of Sumatra and 40km northwest of Java.During May 1883 the island first showed signs that the eruption had begun, with a column of ash from the Perboewatan cone that reached up to 11km into the atmosphere.