In this issue of THE JOURNAL, Zadnik et al1 report results from an ongoing longitudinal study of children in Orinda, Calif, on the important topic of how children's eyes become myopic. The need for basic studies like this one has become increasingly clear in the past decade. Despite the high incidence of myopia in the United States (25% of adults2), the higher and apparently increasing incidence in the Far East (upward of 70% of schoolchildren in Taiwan3), and the increased risk for loss of vision in myopic patients,4 there have been only limited data on normal human ocular development in children aged 8 to 14 years (the ages when most myopia is first detected). The most recent edition of Vision Research—A National Plan 5 published by the National Eye Institute, calls for increasing the base of information in this area, and this study begins. © 1994, IEEE. All rights reserved.