Barton FB, Fong DS, Knatterud GL, and the ETDRS Research Group. Classification of Farnsworth-Munsell 100-Hue Test Results in the Early Treatment Retinopathy Study. Am J Ophthalmol 2004;138(1):119-124.

In July 2004 issue, the Appendix A , “ Details of the Fourier series applied to Farnsworth-Munsell 100-Hue test results ,” was not included online as part of the Supplemental Materials. Appendix A is now available online.

The publisher regrets this error.