Johns Hopkins Scientists Solve 30-Year Biological Mystery of Night Blindness

Johns Hopkins scientists identified how the G90D mutation in the rhodopsin gene causes night blindness, offering potential therapeutic targets.
In what they believe is a solution to a 30-year biological mystery, neuroscientists at Johns Hopkins Medicine say they have used genetically engineered mice to address how one mutation in the gene for the light-sensing protein rhodopsin results in congenital stationary night blindness.

The condition, present from birth, causes poor vision in low-light settings.