Colour blindness is a genetic condition that makes it difficult or impossible to distinguish between certain colours. It is caused by mutations in genes related to colour perception and is more common in males. The symptoms of colour blindness vary between individuals and can range from trouble distinguishing between red and green to seeing only shades of black, white and grey. While there is no cure, colour blindness can be tested for using pseudoisochromatic plates or Ishihara tests, and filters may help some people better distinguish colours. Recent research has shown that gene therapy may one day provide an option to treat colour blindness.

1. Colour Blindness
AMOL GORGILE
M.S. (MEDICINAL CHEMISTRY)
NIPER H

2. Introduction
What is Colour Blindness?
 Colour Blindness is a defect in vision that makes it
difficult/impossible for a person to distinguish
between or among colours.

3. classification

4. Cause
 genetic
Colour blindness is caused by
the X-linked gene. Males are
usually affected because
they only need one X, where
females need both. This child
must have had a parent
carrier.
 Some drug also cause colour
blindness like antidiabetic,
erythromycin,sildenafil,
cardiac glycoside .
 physical

5. symptoms
 The symptoms vary. some
people may be able to see
every colour but not
distinguish red or green. Other
may not be able to see blue
or yellow. Lastly, some people
may not be able to see
colour at all. They may just be
able to see shades of black,
white and gray. This however
is very rare.

6. Test For Colour Blindness
 Pseudoisochromatic plate test
 Ishihara test
 Transformation plate
 Vanishing plate

7. Treatment
 Currently No treatment.
 Some filters (goggles/tinted contact lenses) may
help to distinguish the colours but not in the
identification of colour
 Genetherapy
September 2009, the journal Nature reported that
researchers at the University of Washington and
University of Florida were able to give trichromatic
vision to squirrel monkeys, which normally have
only dichromatic vision, using gene therapy.

8. THANK YOU…