2019
DOI: 10.29014/ns.2019.21
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Disturbances of visual perception in non-demented patients with Parkinson’s disease

Abstract: Įvadas. Parkinsono liga (PL) – neurodegeneracinė liga, kurios plačiam ne motorinių simptomų spektrui priklauso regos suvokimo sutrikimai. Regos suvokimo sutrikimai dažniausiai laikomi progresuojančios PL komplikacija, kuri įspėja apie galimą psichozės iš­sivystymą ir lydinčią demenciją. Vizualinių haliucinacijų etiologija, sergant PL, paprastai būna multifaktorinė: jos siejamos su žemu regos aštrumu, ilga ligos trukme, kognityviniais sutrikimais, sutrikusiu kontrastiniu jautrumu ir susilpnėjusia spalvų diskrim… Show more

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(5 citation statements)
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“…Regarding the subtypes of visual illusions, our observed high prevalences of kinetopsia and complex visual illusions were consistent with the trends reported in other studies [8,12], but this observation was in contrast to the observations of Sasaki et al [9], who identified dysmorphopsia as the predominant visual illusion, present in 35% of patients, followed by complex visual illusions. Notably, dysmorphopsia was reported by only one PD patient in our study and was absent in all 30 PD patients in another Lithuanian study [8]. All these differences may be partly attributed to methodological variations: the distinct phrasing of questions across languages, the different numbers of visual illusion types studied, e.g., only eight types in two of the studies [8,12], and variations in the stringency of cognitive criteria, e.g., 10% of PD patients who reported visual illusions in Sasaki et al's study had MoCA < 21 points [9].…”
Section: Discussionsupporting
confidence: 92%
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“…Regarding the subtypes of visual illusions, our observed high prevalences of kinetopsia and complex visual illusions were consistent with the trends reported in other studies [8,12], but this observation was in contrast to the observations of Sasaki et al [9], who identified dysmorphopsia as the predominant visual illusion, present in 35% of patients, followed by complex visual illusions. Notably, dysmorphopsia was reported by only one PD patient in our study and was absent in all 30 PD patients in another Lithuanian study [8]. All these differences may be partly attributed to methodological variations: the distinct phrasing of questions across languages, the different numbers of visual illusion types studied, e.g., only eight types in two of the studies [8,12], and variations in the stringency of cognitive criteria, e.g., 10% of PD patients who reported visual illusions in Sasaki et al's study had MoCA < 21 points [9].…”
Section: Discussionsupporting
confidence: 92%
“…The 37% occurrence of visual illusions among PD patients in our study also falls within a range of prevalence rates that has been previously reported: 20% in a Lithuanian study [8], 43% found by Nishio et al [12], and the notably higher 75% reported by Sasaki et al [9]. Regarding the subtypes of visual illusions, our observed high prevalences of kinetopsia and complex visual illusions were consistent with the trends reported in other studies [8,12], but this observation was in contrast to the observations of Sasaki et al [9], who identified dysmorphopsia as the predominant visual illusion, present in 35% of patients, followed by complex visual illusions. Notably, dysmorphopsia was reported by only one PD patient in our study and was absent in all 30 PD patients in another Lithuanian study [8].…”
Section: Discussionsupporting
confidence: 90%
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