HK-OxVPS: An Adaptation of the Oxford Visual Perception Screen for the Cantonese Speaking Population in Hong Kong

Tsz Ying Flora LohKathleen Vancleef^*

• Durham University, Durham, United Kingdom

Visual perceptual impairments are common following a stroke but are often left undetected. The Oxford Visual Perception Screen (OxVPS) aims to close this gap by allowing for quick and accessible screening for various visual perceptual deficits in ten subtests such as naming pictures and matching shapes. Hong Kong has many stroke survivors, but only the wealthy can afford comprehensive cognitive assessments, highlighting the need for affordable screening tools in public healthcare. This study developed the Hong Kong- Oxford Visual Perception Screening test (HK-OxVPS), a translation and cultural adaptation of the OxVPS. Normative data from the Hong Kong neurologically healthy population was collected, and cut-off scores for each subtest were derived from the distribution of scores of 95 native Cantonese-speaking participants (50-95 years old). Comparison of cut-off scores with the cut-off scores of the UK version of the OxVPS found a general trend for lower scores on the HK-OxVPS even on non-linguistic-linguistic and non-culturally relevant subtests (intercept in Delta plot analysis = 5.69). Age, education, and visual acuity was not a significant influencer of HK-OxVPS test performance (p-values 0.96, 0.16, and 0.07 respectively). However, qualitative inspection of patterns in the data of participants who were unable to complete specific subtests does suggest a relationship between age and education on test completion. Further validity and reliability testing, as well as improvements to increase test completion, may need to be made for suitability of use for Cantonese stroke survivors in Hong Kong.