IL2RA and uveitis: Nevertheless, this no evidence of association between the Il2RA locus and intermediate uveitis must be taken with caution because, although the statistical power of the overall analysis in the present study is high (Additional file 1: Table S1; 99% at the 5% significant level to identify the previously detected OR equal to 0.52), the statistical power of the stratified analysis for different uveitis forms is limited and, probably, moderate effects are hardly detected.