Blog
Dr. Dvorine's Criticism of the HRR: A Letter to the Inter-Society Subcommittee on Color Blindness
Around 1955, Dr. Israel Dvorine wrote a letter to the Inter-Society Subcommittee on Color Blindness in regards to accepting the American Optical Ha...
The Evolution of Color Vision Testing (Ishihara, HRR, Dvorine, and more)
The Evolution of Color Vision Testing
German researcher Jakob Stilling, developed "Stilling's Colour Table" in 1877, the first color vision test ba...
Military service jobs that require normal color vision
For any of your patients interested in military service, but are color deficient or not correctable to 20/20, I have posted a "simplified" Navy, Co...