Blindness is lack or loss of sight.
color b. Inability to distinguish differences between some colors.
day b. See hemeralopia.
flash b. Temporary loss of vision caused by exposure to intense light.
legal b. Loss of vision to a degree as defined by legal statute to constitute blindness;
maximal correction of acuity of 20/200 or less in the better eye, and diameter of visual field of 20° or less.
night b. See nyctalopia.
snow b. Temporary blindness caused by excessive exposure to sunlight reflected from snow.