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1.
PLoS One ; 19(6): e0305426, 2024.
Article in English | MEDLINE | ID: mdl-38923967

ABSTRACT

BACKGROUND: Visual impairment has been strongly associated with the incidence of dementia. Appropriate cognitive screening for the elderly with visual impairment is crucial for early identification of dementia and its management. Due to challenges in processing visually presented stimuli among participants, the cut-off score of the Hong Kong version of the Montreal Cognitive Assessment for the Visually Impaired (HKMoCA-VI), also known as MoCA-BLIND or MoCA-22, was unknown. Besides, the cognitive status of elderly with visual impairment residing in care homes is rarely investigated. The current study aimed to 1) establish the cut-off score for HKMoCA-VI and 2) examine the general cognitive functioning of elderly with visual impairment living in residential homes in Hong Kong in terms of MoCA-VI percentile scores. METHOD: HKMoCA-VI and the Cantonese version of the Mini-Mental State Examination (CMMSE) were administered to 123 visually impaired elderly residents in care homes in Hong Kong. Percentile scores of HKMoCA-VI by age and education level were determined, and the concurrent validity, sensitivity, and specificity of HKMoCA-VI were assessed. RESULTS: A cut-off score 12 was suggested for HKMoCA-VI, which yielded a sensitivity and specificity of 89.29% and 83.58%, respectively. Moreover, it strongly correlated with CMMSE, indicating satisfactory concurrent validity. CONCLUSIONS: HKMoCA-VI is suggested to be a viable cognitive screening tool for elderly individuals with visual impairment in residential homes. Further modifications to enhance the sensitivity and specificity of the measure are proposed.


Subject(s)
Cognition , Mental Status and Dementia Tests , Humans , Aged , Male , Hong Kong/epidemiology , Female , Aged, 80 and over , Visually Impaired Persons/psychology , Vision Disorders/diagnosis , Vision Disorders/epidemiology , Homes for the Aged , Cognitive Dysfunction/diagnosis , Cognitive Dysfunction/epidemiology , Middle Aged
2.
Dement Neuropsychol ; 14(4): 430-433, 2020 Dec.
Article in English | MEDLINE | ID: mdl-33354298

ABSTRACT

Dementia causes disorders in multiple higher cortical functions. Visual impairment could further impact cognition in those with dementia. This study reports the results of a computerized attention training program in a patient with dementia and visual impairment. The case involves a 98-year-old woman with bilateral maculopathy and moderate dementia. The program consisted of pre- and post-assessments and training sessions. Assessments included the Cantonese version of the Mini-Mental State Examination, the digit span forward test, the Chinese version of the Verbal Learning Test (CVVLT), and the Test of Attentional Performance (TAP). Training sessions were conducted once to twice a week for a total of 8 45-minute sessions. The participant showed a decrease in the CVVLT score and improvements in TAP parameters. The results indicated that, in visually impaired older adults with dementia, attention and processing speed (measured by a sensitive test such as TAP) could potentially be improved with appropriate computerized training.


A demência causa distúrbios em várias funções corticais superiores. O comprometimento da visão pode impactar ainda mais a cognição em pessoas com demência. Este estudo relata os resultados de um programa de treinamento computadorizado de atenção em um paciente com demência e deficiência visual, uma mulher de 98 anos com maculopatia bilateral e demência moderada. O programa consistia em avaliações e pré- e pós-sessões de treinamento. As avaliações incluíram o Mini-Exame do Estado Mental em Cantonês, o teste de extensão de dígitos, a versão chinesa do Teste de Aprendizagem Verbal (CVVLT) e o Teste de Desempenho de Atenção (TAP). As sessões de treinamento foram realizadas uma a duas vezes por semana, com um total de 8 sessões de 45 minutos. A paciente apresentou diminuição no escore CVVLT e melhora nos parâmetros TAP. Os resultados indicaram que em idosos com deficiência visual com demência, a atenção e a velocidade de processamento (medida por um teste sensível como o TAP) poderiam ser melhoradas com a realização de treinamento computadorizado adequado.

3.
Dement. neuropsychol ; 14(4): 430-433, Oct.-Dec. 2020. graf
Article in English | LILACS | ID: biblio-1142837

ABSTRACT

ABSTRACT. Dementia causes disorders in multiple higher cortical functions. Visual impairment could further impact cognition in those with dementia. This study reports the results of a computerized attention training program in a patient with dementia and visual impairment. The case involves a 98-year-old woman with bilateral maculopathy and moderate dementia. The program consisted of pre- and post-assessments and training sessions. Assessments included the Cantonese version of the Mini-Mental State Examination, the digit span forward test, the Chinese version of the Verbal Learning Test (CVVLT), and the Test of Attentional Performance (TAP). Training sessions were conducted once to twice a week for a total of 8 45-minute sessions. The participant showed a decrease in the CVVLT score and improvements in TAP parameters. The results indicated that, in visually impaired older adults with dementia, attention and processing speed (measured by a sensitive test such as TAP) could potentially be improved with appropriate computerized training.


RESUMO. A demência causa distúrbios em várias funções corticais superiores. O comprometimento da visão pode impactar ainda mais a cognição em pessoas com demência. Este estudo relata os resultados de um programa de treinamento computadorizado de atenção em um paciente com demência e deficiência visual, uma mulher de 98 anos com maculopatia bilateral e demência moderada. O programa consistia em avaliações e pré- e pós-sessões de treinamento. As avaliações incluíram o Mini-Exame do Estado Mental em Cantonês, o teste de extensão de dígitos, a versão chinesa do Teste de Aprendizagem Verbal (CVVLT) e o Teste de Desempenho de Atenção (TAP). As sessões de treinamento foram realizadas uma a duas vezes por semana, com um total de 8 sessões de 45 minutos. A paciente apresentou diminuição no escore CVVLT e melhora nos parâmetros TAP. Os resultados indicaram que em idosos com deficiência visual com demência, a atenção e a velocidade de processamento (medida por um teste sensível como o TAP) poderiam ser melhoradas com a realização de treinamento computadorizado adequado.


Subject(s)
Humans , Attention , Vision Disorders , Computer User Training , Dementia
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