CACNA1F and myopia: For the CSNB2 patients, the mean refractive error was −8.09 D ± 3.15 D. The CORDX3 and AIED patients had milder degrees of myopia, where the CORDX3 patients had a mean refractive error of −1.43 D ± 3.81 D, and the AIED patients had a mean refractive error of −1.82 D ± 4.70 D. This study suggested that specific mutations in CACNA1F in CSNB2 patients may uniquely contribute to the severity of myopia.