[MUSIC PLAYING]
SPEAKER: Take a look
at this circle.
Do you see a number in the dots?
It's a 7.
How about in this one?
It's at 13.
If you don't see a number,
it may be a symptom
of colorblindness.
About these condition's name--
it's a bit misleading.
Only the rarest, most severe
type of colorblindness
makes everything look white,
black, and gray.
Here's what this number 16 looks
like to someone
with total colorblindness.
It's much more common to have
trouble telling apart shades
of red and green, blue
and yellow, or a mix of these.
Here's what this number seven
looks similar to for someone
with a more common color
blindness.
Now, good news if you're
a woman--
your DNA makes you much less
likely to get the inherited type
of colorblindness, but about 1
in 15 men
end up with the condition.
Sorry, guys.
And while there is no cure,
you may be able to see shades
of red and green better
with special prescription
contact lenses or eyeglass
filters.
When a medication or disease
causes colorblindness,
getting the underlying problem
treated may help too.
