Tag: we are special

Questions Related to we are special

Write true or false and correct the incorrect statement.
Contact dermatitis is an allergy of the eyes.

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

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Contact dermatitis is an allergy of the eyes. It is when the area around the eyelids comes into contact with an irritating substance.

Condition in which one can see nearby objects clearly but can not see distant objects distinctly is called as:

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

  1. Myopia

  2. Night blindness

  3. Color blindness

  4. Farsightedness

Show answer
Correct Option: A
Explanation:

Myopia is a condition in which the light rays entering the eye converge in front of the retina instead of on the retina, for objects that are at a greater distance.

This results in a blurred image. This is commonly called shortsightedness as they can see objects closer to them clearly but not those that are far away
The defect is corrected using a concave lens
So, the correct answer is 'Myopia'

Using LASIK we can treat:

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

  1. astigmatism

  2. hypermetropia

  3. myopia

  4. All of the above

Show answer
Correct Option: D
Explanation:

LASIK is a laser eye surgery which helps treat astigmatism, hypermetropia and myopia. It cannot treat colour blindness as it is not caused by lens defect of eye.

Which of the following disease is related with eye?

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

  1. Sarcoma

  2. Glaucoma

  3. Lymphoma

  4. Myelenoma

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Correct Option: B
Explanation:

Sarcoma is a type of cancer that develops from certain tissues like bone or muscle.

Glaucoma is a term describing a group of ocular (eye) disorders that result in optic nerve damage, often associated with increased fluid pressure in the eye.
Lymphoma is a cancer of lymphatic cells.
Myeloma is the cancer of plasma cells.
So, the correct answer is 'Glaucoma'.

Deficiency of vitamin A in the body results in insufficient rhodopsin in the rods which leads to

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

  1. Colour blindness

  2. Total blindness

  3. Night blindness

  4. Myopia

Show answer
Correct Option: C
Explanation:

Nyctalopia also called night blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, a lack of vitamin A). It can be described as insufficient adaptation to darkness.
Rhodopsin helps seeing lighted things and is synthesized in the presence of vitamin A (retinol). Its deficiency leads to lack of clear vision during night.

Person who cannot see distant objects is suffering from

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

  1. Cataract

  2. Hypermetropia

  3. Long sightedness

  4. Myopia

Show answer
Correct Option: D
Explanation:

The lens capsule is attached to the ciliary body by a ligament and serves to refract and focus light rays on the retina. Loss of flexibility with age causes presbyopia, characterized by focusing of the image behind the retina. Likewise, too short eyeball causes hyperopia (long-sightedness). In both cases, distant images are clear but the nearby images are blurry and the condition is termed as hypermetropia. 

On the other hand, myopia or nearsightedness is caused by elongation of the eyeball which results in focusing of the image in front of the retina. Thus, the distant images are blurry but the nearby images are clear. 
Cataract is characterized by the presence of opaque lens, incapable of transmitting the light rays and is corrected by surgical replacement of lens with an artificial lens.
So, the correct answer is option D.

Too short an eyeball or too flat a lens produces

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

  1. Nearsightedness

  2. Astigmatism

  3. Myopia

  4. Hypermetropia

Show answer
Correct Option: D
Explanation:

The lens capsule is attached to the ciliary body by a ligament and serves to refract and focus light rays on the retina. Loss of flexibility with age causes presbyopia, characterized by focusing of the image behind the retina. Likewise, too short eyeball causes hyperopia. In both cases, distant images are clear but the nearby images are blurry and the condition is termed as hypermetropia.

On the other hand, myopia or nearsightedness is caused by elongation of the eyeball which results in focusing of the image in front of the retina. Thus, the distant images are blurry but the nearby images are clear. 
Astigmatism is the error in vision as caused by refraction defects brought about by abnormal curvature in surface or cornea or lens. This causes fuzzy image formation on the retina due to the uneven focusing of light rays.
So, the correct answer is option D.

Reduction is the elasticity of eye lens with age may result in

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

  1. Cataract

  2. Myopia

  3. Presbyopia

  4. Hypermetropia

Show answer
Correct Option: C
Explanation:

The lens capsule is attached to the ciliary body by a ligament and serves to refract and focus light rays on retina. Loss of flexibility with age causes presbyopia, characterized by focusing of image behind the retina. Likewise, too short eyeball causes hyperobia. In both cases, distant images are clear but the nearby images are blurry and the condition is termed as hypermetropia. This makes option C correct and option D incorrect. On the other hand, myopia or nearsightedness is caused by elongation of eyeball which results in focusing of image in front of retina. Thus, the distant images are blurry but the nearby images are clear. This makes option B incorrect. Cataract is characterized by presence of opaque lens, incapable of transmitting the light rays and is corrected by surgical replacement of lens with artificial lens. This makes option A incorrect. Correct answer is C. 

Short sightedness is otherwise known as 

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

  1. Myopia

  2. Hyperopia

  3. Astigmatism

  4. Presbyopia

Show answer
Correct Option: A
Explanation:

The lens capsule is attached to the ciliary body by a ligament and serves to refract and focus light rays on the retina. Loss of flexibility with age causes presbyopia, characterized by focusing of the image behind the retina. Likewise, too short eyeball causes hyperopia (long-sightedness). In both cases, distant images are clear but the nearby images are blurry and the condition is termed as hypermetropia.

On the other hand, myopia or nearsightedness or shortsightedness is caused by elongation of the eyeball which results in focusing of the image in front of the retina. Thus, the distant images are blurry but the nearby images are clear. 
Astigmatism is the error in vision as caused by refraction defects brought about by abnormal curvature in surface or cornea or lens. This causes fuzzy image formation on the retina due to the uneven focusing of light rays. 
So, the correct answer is option A.

Concave lens is used to correct 

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

  1. Myopia

  2. Presbiopia

  3. Hypermetropia

  4. Cataract

Show answer
Correct Option: A
Explanation:

Myopia is nearsightedness and short-sightedness, is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it, causing the image that one sees when looking at a distant object to be out of focus, but in focus when looking at a close object.
It can be corrected by the use of corrective lenses that have a negative optical power i.e., concave glasses which compensates for the excessive positive diopters of the myopic eye.
So, the correct answer is option A.