The Oxford Visual Perception Screen: Development and normative data of a standardised assessment for visual perception difficulties.
Vancleef K., Castellani R., Shorthose R., Guo C., Cai MF., Guazzo F., Demeyere N.
OBJECTIVE: We aimed to develop and standardise a practical systematic screening tool for visual perception impairments after a stroke to replace current subjective methods. DESIGN: A mixed methods study including a cross-sectional study and a case series. SETTING: In the community and on stroke rehabilitation units. PARTICIPANTS: Older volunteers without a neurological history contributed to normative data. Patients with ocular conditions or a stroke took part in our case series. INSTRUMENT: The Oxford Visual Perception Screen. MAIN MEASURES: For each task of the Oxford Visual Perception Screen, we determined 5th centile cut-off scores. We further explored effects of age, visual acuity and gender on visual perception through generalised linear models. RESULTS: Oxford Visual Perception Screen is a 15-min paper-and-pen assessment comprising 10 tasks including picture naming, star counting and reading. Normative data of 107 participants demonstrated persistent high performance with most cut-offs near ceiling. Apart from the Figure Copy (Z = 6.57, p