How things look to someone who is colorblind. Overview of tests and genetics.
Aspects of Perception
Illustrates "how people with less than three types of cones can confuse different wavelengths."
Children's Vision: Color Vision Deficiency
Describes signs, testing, causes, types, and disadvantages. From the Optometric Physicians of Washington (OPW).
Identifies many conditions which can cause color problems. Includes information on diagnosis, treatment, and prognosis.
Professional information on color blindness, related conditions and tests.
Information from Cataract and Laser Institute. Presents signs, symptoms, detection, and treatment options.
Presents symptoms, causes, types, and tests. Includes a form for questioning an optometrist.
Presentation about normal vision. Includes spectra, eye anatomy and color response curves.
Discusses school difficulties from low color vision, as well as inheritance and safety considerations.
Color Vision Confusion
Explains how web pages can be designed to avoid problems for those with colorblindness. Includes color wheels and references for design tutorials.
Color Vision Deficiency Information & Products
Searchable Online Accommodation Resource provides contact details for United States makers and suppliers of assistive devices.
Short facts on condition. Links to self-diagnostic test.
Explains mechanics and physiology, and includes color wheels to simulate what the disabled see.
Includes an Ishihara plate, information from those disabled and their relatives, and links to media articles. The names of colors appear in the color.
Colors for the Color Blind
Provides background information and a set of charts to help those working with computer colors.
Wikipedia article includes a simple diagnostic test, rates of incidence, causes, and types of deficiency.
Disability Action Centre
A fact sheet from the Royal Mail in the United Kingdom provides advice for workers. [PDF]
Drugs Affecting Color Vision
Lists common medications that are thought to contribute to this condition.
Explaining Color Deficiency
Includes chart, tables, and pictures.
Pictures to approximate what the patient sees. Article about color problems, causes, and compensation with web design or browser settings.
Mayo Clinic: Poor Color Vision
Includes overview, causes, screening, diagnosis, treatment, and coping skills.
More Prevalent Among Males
A report from the Howard Hughes Medical Institute explains how the condition is inherited.
Arizona State University provides definitions and tests.
Allows the user to see the world as color blind people see it. Checks by images and urls.
Software utility that transforms colors of the computer display into the discriminable colors for people with color blindness.
Gene Research on Cure for Colorblindness
A report from the Medical College of Wisconsin outlines the results of trials to insert normal genes into the retina using a retrovirus.
Color Vision Test Detects Diabetic Retinopathy Before Vision is Lost
to ID those who will progress to develop more severe retinal disease
Severity of Colorblindness Varies
An article by the Professor of Ophthalmology at Medical College of Wisconsin.
Looking for Madam Tetrachromat
Considers the possibility of superior color vision. Also discusses color deficiencies. Plain text, but includes URLs for links.
CNN: New eyeglasses designed to help people with colorblindness
Presents the views of an optometrist and ophthalmologist.
FDA Talk Paper: ColorMax Lenses
A fact sheet from the U.S. Department of Health and Human Services addresses the claims made by the manufacturers and promoters.
Color Vision Changes Signal Blood Glucose Fluctuations
70% of young type 1 patients without retinopathy have color vision changes.
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