Publication

Effects of low visual acuity on neuropsychological assessment

de Haan, G., Heutink, J. & Tucha, O., 2018.

Research output: Contribution to conferencePosterAcademic

Background and aims
Norm data of most neuropsychological tests do not correct for the potential influence of visual disorders. Therefore, current neuropsychological assessment for elderly with visual disorders, which is a relatively large population, is non-optimal quality. For a number of commonly used neuropsychological tests, it is examined to what extent low vision influences test performance.

Method
In 241 healthy elderly without visual or neurological disorders, simulation glasses were used to simulate low visual acuity. Participants in group A (n=119, average age 65) performed the MMSE, Balloons Test and Complex Figure of Rey with simulation glasses, and the Trailmaking Test and VOSP with normal vision. Participants in group B (n=122, average age 65) performed the Trailmaking Test and VOSP with simulation glasses and the other tests with normal vision.

Results
Low visual acuity had a negative impact on the Trailmaking Test, Complex Figure of Rey (copy score) and VOSP subtest 3, but not on the MMSE and Balloons Test. For some tests, the negative impact of low visual acuity increased with age.

Conclusions
When administering the Trailmaking Test, Complex Figure of Rey (copy score) and VOSP subtest 3 to older people with low visual acuity, low test scores should be interpreted with great caution. Low test scores on the MMSE and Balloons Test are not likely to be caused by low visual acuity and are more likely to reflect actual cognitive impairment. These results have important implications for the use of neuropsychological tests in the visually impaired population.
Original languageEnglish
Publication statusPublished - 2018
Event15th NR-SIG-WNR Conference - Prague, Czech Republic
Duration: 15-Jul-201816-Aug-2018

Conference

Conference15th NR-SIG-WNR Conference
CountryCzech Republic
CityPrague
Period15/07/201816/08/2018

Event

15th NR-SIG-WNR Conference

15/07/201816/08/2018

Prague, Czech Republic

Event: Conference

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