EnChroma offers its EnChroma Doppler Color Blind Glasses
in Indoor/Outdoor or Outdoor for $289. Coupon code "FATHERSDAY16" drops the price to $239
. With free shipping
, that's $130 off list price and the best deal we could find. Designed for adults with symptoms of color blindness, these glasses purport to improve visual detail and depth perception of colored objects.
Note that it's currently on backorder with an estimated shipping time of two to four weeks.