▁par iet al ▁lo b ule ▁damage . ▁ ▁Pres entation ▁Anton ▁synd rome ▁is ▁mostly ▁seen ▁following ▁a ▁stroke , ▁but ▁may ▁also ▁be ▁seen ▁after ▁head ▁injury . ▁Ne uro log ist ▁Mac don ald ▁Crit ch ley ▁describes ▁it ▁thus : ▁ ▁The ▁sudden ▁development ▁of ▁bil ater al ▁oc cip ital ▁d ys function ▁is ▁likely ▁to ▁produce ▁trans ient ▁physical ▁and ▁psych ical ▁effects ▁in ▁which ▁mental ▁confusion ▁may ▁be ▁prominent . ▁It ▁may ▁be ▁some ▁days ▁before ▁the ▁relatives , ▁or ▁the ▁n urs ing ▁staff , ▁st umble ▁onto ▁the ▁fact ▁that ▁the ▁patient ▁has ▁actually ▁become ▁sight less . ▁This ▁is ▁not ▁only ▁because ▁the ▁patient ▁ordin arily ▁does ▁not ▁volunte er ▁the ▁information ▁that ▁they ▁have ▁become ▁blind , ▁but ▁he ▁further more ▁mis le ads ▁his ▁ent ou rage ▁by ▁behav ing ▁and ▁talking ▁as ▁though ▁they ▁were ▁sight ed . ▁Att ention ▁is ▁ar oused ▁however ▁when ▁the ▁patient ▁is ▁found ▁to ▁col lide ▁with ▁pieces ▁of ▁furn iture , ▁to ▁fall ▁over ▁objects , ▁and ▁to ▁experience ▁difficulty ▁in ▁finding ▁his ▁way ▁around . ▁They ▁may ▁try ▁to ▁walk ▁through ▁a ▁wall ▁or ▁through ▁a ▁closed ▁door ▁on ▁his ▁way ▁from ▁one ▁room ▁to ▁another . ▁Sus p icion ▁is ▁still ▁further ▁alert ed ▁when ▁they ▁begin ▁to ▁describe ▁people ▁and ▁objects ▁around ▁them ▁which , ▁as ▁a ▁matter ▁of ▁fact , ▁are ▁not ▁there ▁at ▁all . ▁Thus ▁we ▁have ▁the ▁tw in ▁sympt oms ▁of ▁anos ogn os ia