The Journal of Vision is an on-line, free-access, peer-reviewed scientific journal devoted to all aspects of visual function in humans and other organisms. The journal is published exclusively in digital form: full-text articles may be accessed for free via the internet. The journal encourages the effective use of color, multimedia, hyperlinks, program code, and other digital enhancements. The Journal of Vision is published by the Association for Research in Vision and Ophthalmology (ARVO), an international organization devoted to research, training, and dissemination of knowledge in vision and ophthalmology.