The EnChroma glasses are available for color-blind people to borrow at certain museums, ... to where the stars and stripes fluttered atop a tall white pole. "The flag is brighter too," he said.

The complete inability to see any colors except white, black, and gray is called achromatopsia. But this is rare. In most cases, you can still see colors, but they appear dull or muted.

Generally, color-corrective glasses can range in price from $100 to $400, depending on type and strength. This led the library to purchase two pairs of glasses from the company Pilestone: ... North ...

The glasses don’t cure color blindness, but for people with the most common forms of color vision deficiency, they can provide a sharper contrast and vibrancy to the vision spectrum. The glasses ...