The speed acuity test as a diagnostic aid in cerebral visual impairment.

ABSTRACT: One of the characteristics of children with cerebral visual impairments (CVI) is that they need more time to process visual information. However, currently, few tests are available that can reliably measure visual processing speed. The speed acuity test, a discrimination reaction-time test in which participants indicate the orientation of Landolt-C symbols as quickly and accurately as possible, was specifically developed to determine the time a child needs to discern visual details. The test measures both the accuracy and the latency of the responses for nine different optotype sizes in order to control for decreased visual acuity. The results show that children with CVI need significantly more time to respond to the largest optotype sizes than age-matched normally sighted children and chi

SUBMITTER: Tanke N 

PROVIDER: S-EPMC9217927 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature