All About Vision – Low Vision Information
American Academy of Ophthalmology
American Foundation for the Blind
American Optometric Association
The Institute for Rehabilitation and Research
LowVision.com – Low Vision Superstore
Medem – Healthcare Network, Medical Resource
Microphthalmia and Anophthalmia in Children Society
Mississippi State University Rehabilitation and Research Training Center on Blindness and Low Vision
The National Eye Institute (part of National Institute for Health)
National Organization for Albinism and Hypopigmentation (NOAH)
National Organization for Rare Disorders
Online Center for Biotechnology Information, Online Mendelian Inheritance in Man search site
University of Houston College of Optometry
Wilmer Eye Institute's Q&A page