BACKGROUND Prominent visual symptoms can present in the visual variant of Alzheimer's disease (VVAD). Ophthalmologists have a significant role to play in the early diagnosis of VVAD. METHODS We retrospectively reviewed the files of ten consecutive patients diagnosed with VVAD. All patients had a full neuro-ophthalmologic examination, a formal neurological and neuro-psychological testing, and ...

IN a previous paper (Luria, 1959), one of the present authors communicated a case in which marked disorders of "simultaneous perception" (simuhanagnosia) resulted from bilateral occipital brain injury. As in earlier cases of the same type (Balint, 1909; Holmes and Horrax, 1919; Paterson and Zangwill, 1944; H6caen and Ajuriaguerra, 1954) the patient was able to perceive only one object at a time...

Simultanagnosia is a disorder characterized by an inability to see more than one object at a time. We report a simultanagnosic patient (ED) with bilateral posterior infarctions who produced frequent illusory conjunctions on tasks involving form and surface features (e.g., a red T) and form alone. ED also produced "blend" errors in which features of one familiar perceptual unit appeared to migra...

In 1909 a Hungarian physician, Rezsö Bálint, published the first report of a striking visual problem in a patient with bilateral parietal lesions (Bálint, 1909). Bálint had studied his remarkable patient for several years, starting in 1903, struggling to fully understand the nature of the complex neurological disorder. The disorder was characterized by problems in simultaneously processing mult...