Pattern reversal visual evoked potentials (prVEPs) in autosomal recessive hereditary spastic paraplegia with thin corpus callosum (ARHSPTCC) patients with SPG 11 mutations in Saudi Arabia, cross section hospital base study

•Most of the ARHSPTCC patients with SPG 11 mutations have abnormal pattern reversal visual evoked potentials (prVEPs).•81.82% of subjects with SPG11 mutation spastic paraplegia (ARHSPTCC) have significantly prolonged P100 bilateral responses.•spatacsin has a role in the visual pathway.