Tag: disorders of nervous system

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Questions Related to disorders of nervous system

Multiple choice evs we are special defects of eye disorders of nervous system braille script

World Braille Day is observed on

  1. 4th January

  2. 21st January

  3. 14th January

  4. 4th March
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • World Braille Day is annually celebrated on January 4, the birthday of Braille inventor, Louis Braille. 
  • The day recognizes the contributions of Louis Braille in helping blind and visually impaired people to read and write. Hence, World Braille Day is observed on 4th January.
    •   So, the correct answer is '4th January'.
Multiple choice evs we are special defects of eye disorders of nervous system braille script

Braille script is read from

  1. Right to left

  2. Left to right

  3. Top to bottom

  4. Bottom to top
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Braille was named after the creator, Louis Braille, a Frenchman who lost his sight as a result of childhood accident. It involves the usage of 6 dots and the direction is left to right. The characters have rectangular blocks called cells that have tiny bumps called raised dots.
So, the correct answer is 'Left to right'.
Multiple choice evs we are special defects of eye disorders of nervous system braille script

In colour blindness red, green and other colours appear as

  1. White

  2. Yellow

  3. Grey

  4. Pink
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Colour blindness is not really blindness it is the inability to see color. Red-Green color blindness is a sex-linked recessive disorder. 
  • The gene for the color receptor is located on X chromosome any defect in this gene causes a person to lose his ability to see red and green. 
  • For a colorblind person, red and green colors appear, Grey,

So, the correct answer is 'Grey'.

Multiple choice evs we are special defects of eye disorders of nervous system braille script

What kind of paper is used for Braille Script?

  1. The conventional paper is used.

  2. Braille paper is about as thick as a file folder or index card.

  3. Any kind of paper can be used.

  4. A 75 GSM thick paper is used.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Braille was named after the creator, Louis Braille, a Frenchman who lost his sight as a result of childhood accident. It involves the usage of 6 dots and the direction is left to right. The paper used is think as a file folder or index card for proper sensing by the visually impaired people. The characters have rectangular blocks called cells that have tiny bumps called raised dots.
So, the correct answer is 'Braille paper is about as thick as a file folder or index card'.
Multiple choice evs we are special defects of eye disorders of nervous system braille script

Too short eye ball and too flat lens produce

  1. Astigmatism

  2. Presbyopia

  3. Near sightedness

  4. Far sightedness
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
When the eye ball becomes too short or lens get flattened, light rays instead of getting focussed on the retina, get focussed behind the retina. Hence, the image is formed behind the retina. This condition is called hypermetropia, also known as long-sightedness. In this disorder, vision of nearby objects gets blurred. It is corrected using convex rays which help to focus the rays on the retina.
So, the correct answer is 'Far sightedness'. 
Multiple choice evs we are special defects of eye disorders of nervous system braille script

Braille script is 

  1. A special type of script that is used by people who cannot see.

  2. A special type of script that is used by people who cannot hear.

  3. A special type of script that is used by people who cannot speak.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Braille is a tactile writing system used by people who are visually impaired. It is traditionally written with embossed paper.
  •  Braille users can read computer screens and other electronic supports using refreshable braille displays. 
  • They can write braille with the original slate and stylus or type it on a braille writer, such as a portable braille notetaker or computer that prints with a braille embosser. Hence, the Braille script is A special type of script that is used by people who cannot see. 
So, the correct answer is ' A special type of script that is used by people who cannot see.

Multiple choice evs we are special defects of eye disorders of nervous system braille script

If a patient suffers a stroke that destroys the optic tract on the right side of the brain, which of the following visual defects will result?

  1. There will be no vision in the left eye, but vision will be normal in the right eye.

  2. The patient will not perceive images of objects striking the left half of the retina in the left eye.

  3. The patient will not perceive images of objects striking the right half of the retina in the right eye.

  4. Neither eye will perceive objects in the right side of the patient's field of view.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The right optic tract carries information from the left visual field of both eyes. Damage to the right optic tract results in left homonymous hemianopia, meaning the patient cannot perceive images striking the left half of the retina in the left eye (which corresponds to the right visual field) or the right half of the retina in the right eye (which corresponds to the left visual field). Option B correctly describes the loss of the left half of the retina's input.

Multiple choice evs we are special defects of eye disorders of nervous system braille script

Find the odd one out of the following 

  1. $Nightblindness$
  2. $Glaucoma$
  3. $Cataract$
  4. $Hyperglycemia$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Night blindness is a vitamin deficiency disorder, whereas glaucoma, cataract, and hyperglycemia (often associated with diabetic retinopathy) are conditions related to eye diseases or systemic metabolic issues affecting the eye.