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Home   »   What Is Colour blindness? – Burning...

What Is Colour blindness? – Burning Issues – Free PDF Download

 

  • SC directs FTII to allow colour-blind candidates in all courses
  • The Supreme Court directed the Pune-based Film and Television Institute of India (FTII) to allow colour-blind candidates pursue filmmaking and editing courses, saying “art is non-conformist” and a “liberal thought process should not be put in a conformist box”.
  • A Bench led by Justice S.K. Kaul and M.M Sundresh said a premier institute such as the FTII should change its perceptions. Colour-blindness is merely a deficiency and not blindness.

Background

  • The order is based on a report submitted by a court-appointed panel of experts that reviewed the FTII’s admission criteria with respect to colour-blind students, as well as the curriculum of those courses where such individuals were precluded from admission.

What the Case?

  • Ashutosh Kumar, in his petition, claimed the committee that carried out his medical examination did not have an ophthalmologist who could ascertain the nature and extent of his colour-blindness.
  • He said he was found ineligible for admission due to the colour-grading module, which he described as irrelevant for the three-year film-editing course.
  • The panel, set up in December 2021, also found that colour-blind candidates were ineligible for four more courses — cinematography, electronic cinematography, art direction and production design and editing.
  • The conclusion (by the panel) shows a clear recommendation that all individuals will be allowed for all courses at FTII. Any limitation can be overcome.
  • FTII should make accommodation in its curriculum for candidates with colour-blindness and the colour-grading module in its existing diploma and film-editing course curriculum should be excluded or made elective.

Restricting entry ‘may sacrifice creative talent’

  • In the view of the committee, colour-blind candidates should be enrolled in all film-related courses because creations in this medium are collaborative art forms.
  • Restricting entry of colour-blind candidates “may sacrifice creative talent and stultify the development of the art”, as inclusivity enriches this art form. “Any limitation can be overcome by an assistant in the education and professional life,” the panel said.

What is colour blindness?

  • Colour blindness, also known as colour deficiency, is the inability to see colours in the normal way.
  • Colour blind individuals often cannot distinguish between certain colours — usually greens and reds, and sometimes blues as well.
  • Two types of cells in the retina detect light — the “rods”, which distinguish between light and dark, and the “cones” that detect colour.
  • There are three types of cones that see colour — red, green, and blue — and our brains use the information from these cells to perceive colour.

  • Colour blindness can be the result of the absence of one or more of these cone cells, or their failure to work properly. In a situation where all three cone cells are present but one of them is malfunctioning, mild colour blindness may occur.
  • Colour blindness may be of different kinds and degrees. Mildly colour blind people often see all colours properly only when the light is good; there are others who cannot tell one colour apart from the another no matter how good the light is.

  • In the most severe kind of colour blindness, vision is black-and-white, that is, everything appears as a shade of grey. This is not very common.

Clarity usually not affected

  • Color blindness generally affects both eyes, and the condition remains roughly the same for as long as the individual is alive.
  • Unless the color blindness is of the most severe kind, the sharpness or clarity of vision is not affected. Many people are so mildly colour blind that they do not even realise that they have the condition.
  • Colour blindness cannot as yet be treated or reversed. However, it can be corrected to some extent by wearing special contact lenses or colour filter glasses.
  • There is some research that suggests gene replacement therapy can help modify the condition.

Detecting the condition

  • In the case of a child, parents can notice the deficiency for the first time when the child is beginning to learn colours.
  • The child may have difficulty in seeing colours or in recognising the brightness of colours in ways that would be considered ‘normal’.
  • The child may also show an inability to distinguish between shades of the same or similar colours. Parents and teachers often notice the child cannot tell between red and green, and blue and yellow.

What causes colour blindness

  • Most colour blind people are born with the condition (congenital colour blindness), but some can develop it later in life. Congenital colour vision deficiencies are usually passed on genetically.

  • A problem with colour vision that arises later in life could be the result of disease, trauma, or ingested toxins. If colour blindness arises out of disease, one eye may be affected differently from the other, and the difficulty could worsen over time.
  • Medical conditions that may increase the risk of getting colour blindness include glaucoma, diabetes, Alzheimer’s, Parkinson’s, alcoholism, leukaemia, and sickle-cell anaemia.

Who is at risk?

  • Men suffer from a higher incidence of colour blindness than women. Around the world, every tenth male is estimated to have some form of colour deficiency. Men of Northern European descent are considered to be especially vulnerable.

What you can or cannot do

  • Colour blindness impairs in some ways the ability to do certain kinds of jobs, such as being a pilot or joining the armed forces. However, whether you can or cannot do these jobs often depends on the severity of the colour blindness, and the rules in place in different jurisdictions.
  • In June 2020, India’s Ministry of Road Transport and Highways amended the Central Motor Vehicles Rules 1989 to enable citizens with mild to medium colour blindness to obtain a driver’s licence.
  • The decision was taken after the Ministry received representations that colour blind citizens are not able to get a driver’s licence because restrictions specified in the requirements in the declaration about physical fitness (Form I) or the Medical certificate (Form IA) make it difficult, a government release said.

Question:
Colour vision in human eyes is the function of photoreceptor cells named :

  1. Rods
  2. Cones
  3. Blind spot
  4. Fovea

 
 

 

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