Genotype frequencies of participants.

Genotype frequencies given as percentages.Abbreviations used: SD = standard deviation, L = litre.Tests used: Chi-square test for comparison of genotype frequencies between CARMS 1–5 and between CARMS 5 with subretinal fibrosis and CARMS 5 without subretinal fibrosis, and one-way ANOVA test for comparison of plasma 25-hydroxyvitamin D concentrations between different genotypes. No significant differences were found in the genotype frequencies between CARMS 1–5, or in the 25-hydroxyvitamin D concentrations between different genotypes.*Genotype missing for 4 patients with CARMS 5.**Genotype missing for 1 patient with CARMS 4.***Genotype missing for 1 patient with CARMS 5.