Validation of a Computerized Evaluation of Visual Perception in Youth with Cerebral Palsy and Severe Motor and Speech Deficiencies
Background: Individuals with Cerebral Palsy (CP) may exhibit impairment of visual perception, which might decrease their functionality. While there are standard frequently used evaluations of visual perception, e.g. theMotor-Free Visual Perception Test (MVPT), these tools are not suitable for populations with significant speech and motor difficulties, who are unable to point or verbalized their answer.
Aim: To validate a computerized version of the MVPT, developed for this study, by comparing the visual perception scores between youth with significant motor and speech deficiencies due to CP and healthy youth,
Methods:The study population comprised of youth at the ages of 6 to 21 years. For the group with CP, inclusion criteria were significant motor disability and speech deficiency. Each subject performed the MVPT in its computerized version. The CP group used aneye tracking device (see Figure).
Results: The two group comprised of 22 healthy volunteers (7 males, age 13.8±4.6) and 11 volunteers with CP (4 males, age 14.8±3.0). The MVPT scores of the participants with CP (73.7±10.1) were significantly lower compared to the scores of the healthy participants (110.9±8.4; p<.001).
Discussion: In this study, the standardized MVPT was made accessible to individuals with CP with severe motor and speech deficiencies via an eye tracker. For the first time, the visual perception was quantified. The tool is simple to use and can be utilized in clinics worldwide.