Athletes formerly competed in different categories based on the severity of their blindness.
The diagnosis of RP was based on the presence of night blindness, typical fundus findings, reduced peripheral visual field, abnormal OCT result, and family history.
The diagnosis of RP was based on the presence of night blindness, fundus findings (retinal pigmentation, vessel attenuation, and various degrees of retinal atrophy), severe loss of peripheral visual field, abnormal ERG findings (dramatic diminution in amplitudes or complete absence of response), and family history.
A diagnosis of PML in our case was made based on the presentation of a cortical blindness, rapidly progressive course of the disease, and MRI and MR spectroscopy scans consistent with PML.
The age group 40 years and above was targeted based on the available evidence that most blindness occurs in this age category [ 32, 33].
Exclusion criteria were (i) any physical or mental illness, or being on medication, based on a routine case history and medical examination, and (ii) color blindness based on the Ishihara test.
The all-age prevalence of blindness for the Occupied Palestinian Territories is estimated to be 0.4%, based on the WHO estimate that 82% of blindness occurs in ≥50 years.
The prevalence of low vision and blindness were calculated based on the sampling design, which was approximated as a one-stage cluster design where each household was considered to be the primary sampling unit.
We expect that approximately 5% of the VICS cohort (n=11) will have an impairment that affects their capacity to attend mainstream school (such as severe intellectual impairment, moderate to severe cerebral palsy, blindness or deafness) based on the 2 year assessment.
