D2I2.
genetic

Blue cone monochromacy

Blue cone monochromacy (BCM) is an inherited eye disease that causes severe color blindness, poor visual acuity, nystagmus, hemeralopia, and photophobia due to the absence of functional red (L) and green (M) cone photoreceptor cells in the . BCM is a disease and almost exclusively affects males.

Underlined words are explained — tap any of them.

Symptoms — what it feels like

  • ·poor ability or inability to distinguish colors, poor visual acuity, nystagmus, hemeralopia

Treatment

  • ·dark lenses
Plain-language summary adapted from Wikipedia. Not medical advice.