Biology · Physics

Vision Defects and Eye Conditions

1,088 Questions

Vision defects and eye conditions questions focus on common visual impairments like myopia, cataracts, and glaucoma. These topics are regularly tested in the general science sections of competitive exams. Solve these questions to learn about optical defects and treatments.

Myopia and hypermetropiaCataracts and risk factorsGlaucoma treatmentsEye infection typesArtificial tears

Vision Defects and Eye Conditions Questions

Multiple choice
  1. Presbyopia

  2. Cataract

  3. Astigmatism

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp focus at two different distances. Astigmatism is a state in which one cannot see both the vertical and horizontal lines simultaneously.

Multiple choice
  1. Hashimoto's disease

  2. Primary myxedema

  3. Graves' disease

  4. Idiopathic thrombocytopenic purpura

  5. Autoimmune hemolytic anemia

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Graves' disease, there is a hyperthyroidism due to stimulating autoantibodies to the TSH receptor which continuously mimic the effect of TSH but which are not subject to the feedback mechanisms which lower the level of TSH once sufficient thyroid hormone has been produced. Graves' disease is often associated with exophthalmos, which involves marked hypertrophy of the extra-occular muscles. This association may be caused by autoantibodies against an antigen present on both eye muscle and thyroid.

Multiple choice

What reason did the specialist give for the vision problem that the author had?

Directions: Read the passage and answer the question that follows.

“What’s wrong?” asked my customer as I covered one eye, then the other, and stared at her in disbelief. “Your head is missing,” I said anxiously. I slumped on the stool behind the counter of my fashion boutique and placed my palm over my left eye. Sure enough, there was a large black area at the top of my vision in my right eye.
A phone call to an ophthalmologist’s office started the ball rolling and a dye test to look at the retina was performed that afternoon. That night I couldn’t sleep with worry, petrified that I might go blind. The eye specialist confirmed that there was damage to the retina and he wasn’t sure exactly what the cause was – a virus, perhaps? He stressed that it could happen again and cautioned me to keep my immune system strong. I was given a dose of antibiotics and told to rest.
That was in 1986. I was 36 years old, married with three children and working full time. While it didn’t take long for me to grow accustomed to my vision impairment, the shock of partially losing my sight made me rethink my life, and I left my marriage of 19 years. Moving to northern New South Wales in 1990 gave me the chance to experience living in a small community. Perhaps it was the pressure of a new job, a new relationship, and raising a family that took their toll, but by 1993 the vision in my right eye had become more cloudy and blurry. The specialist asked me if I’d ever been to the Wheat Belt in America, as the scars in my retina were similar to a disease from that area. I hadn’t, and so we remained in the dark about what was causing my loss of vision. But I did notice that I was often tired and found it an effort to keep my head upright. I wanted to sleep all the time.

 

  1. He suspected injury.

  2. He suspected a virus.

  3. He suspected heredity disease.

  4. He suspected a stressfull lifestyle.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The eye specialist confirmed that there was damage to the retina and he wasn’t sure exactly what the cause was – a virus, perhaps?

Multiple choice

Why did the author say: “Your head is missing,”?

Directions: Read the passage and answer the question that follows.

“What’s wrong?” asked my customer as I covered one eye, then the other, and stared at her in disbelief. “Your head is missing,” I said anxiously. I slumped on the stool behind the counter of my fashion boutique and placed my palm over my left eye. Sure enough, there was a large black area at the top of my vision in my right eye.
A phone call to an ophthalmologist’s office started the ball rolling and a dye test to look at the retina was performed that afternoon. That night I couldn’t sleep with worry, petrified that I might go blind. The eye specialist confirmed that there was damage to the retina and he wasn’t sure exactly what the cause was – a virus, perhaps? He stressed that it could happen again and cautioned me to keep my immune system strong. I was given a dose of antibiotics and told to rest.
That was in 1986. I was 36 years old, married with three children and working full time. While it didn’t take long for me to grow accustomed to my vision impairment, the shock of partially losing my sight made me rethink my life, and I left my marriage of 19 years. Moving to northern New South Wales in 1990 gave me the chance to experience living in a small community. Perhaps it was the pressure of a new job, a new relationship, and raising a family that took their toll, but by 1993 the vision in my right eye had become more cloudy and blurry. The specialist asked me if I’d ever been to the Wheat Belt in America, as the scars in my retina were similar to a disease from that area. I hadn’t, and so we remained in the dark about what was causing my loss of vision. But I did notice that I was often tired and found it an effort to keep my head upright. I wanted to sleep all the time.

 

  1. She was confused

  2. She was not able to see

  3. She was dreaming

  4. She was hallucinating

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mentioned in the 1st paragraph.

Multiple choice

Why does the author mention that she was petrified?

Directions: Read the passage and answer the question that follows.

“What’s wrong?” asked my customer as I covered one eye, then the other, and stared at her in disbelief. “Your head is missing,” I said anxiously. I slumped on the stool behind the counter of my fashion boutique and placed my palm over my left eye. Sure enough, there was a large black area at the top of my vision in my right eye.
A phone call to an ophthalmologist’s office started the ball rolling and a dye test to look at the retina was performed that afternoon. That night I couldn’t sleep with worry, petrified that I might go blind. The eye specialist confirmed that there was damage to the retina and he wasn’t sure exactly what the cause was – a virus, perhaps? He stressed that it could happen again and cautioned me to keep my immune system strong. I was given a dose of antibiotics and told to rest.
That was in 1986. I was 36 years old, married with three children and working full time. While it didn’t take long for me to grow accustomed to my vision impairment, the shock of partially losing my sight made me rethink my life, and I left my marriage of 19 years. Moving to northern New South Wales in 1990 gave me the chance to experience living in a small community. Perhaps it was the pressure of a new job, a new relationship, and raising a family that took their toll, but by 1993 the vision in my right eye had become more cloudy and blurry. The specialist asked me if I’d ever been to the Wheat Belt in America, as the scars in my retina were similar to a disease from that area. I hadn’t, and so we remained in the dark about what was causing my loss of vision. But I did notice that I was often tired and found it an effort to keep my head upright. I wanted to sleep all the time.

 

  1. She was scared of darkness.

  2. She feared that she will become blind.

  3. She was afraid that her family will leave her.

  4. She was not happy with her life and was scared of dying.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

That night I couldn’t sleep with worry, petrified that I might go blind.

Multiple choice
  1. your teenage

  2. your twenties

  3. your middle age

  4. by age 65

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hearing losses actually begin in your twenties.

Multiple choice
  1. Presbyopia

  2. Astigmatism

  3. Cataract

  4. Glaucoma

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Glaucoma, a build-up of pressure in the front of the eyes that can cause damage to the optic nerve and may produce blind spots or loss of peripheral vision.

Multiple choice
  1. Old eye

  2. Blurred vision

  3. Cataract

  4. Cannot be determined from the passage

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is not mentioned in the passage.

Multiple choice
  1. Endophthalmitis

  2. Epilepsy

  3. Posterior capsule opacification

  4. Retinal detachment

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Epilepsy is not a complication of the cataract surgery. Epilepsy is a brain disorder in which a person has repeated seizures over time. Seizures are episodes of disturbed brain activity that cause changes in attention or behaviour.

Multiple choice
  1. hypothyroidism

  2. cataract

  3. Addison’s disease

  4. hyperthyroidism

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Protrusion of eyeball is a symptom of hyperthyroidism. The forward protrusion of the eyes is due to immune-mediated inflammation in the retro-orbital fat. Exophthalmos, when present, may exacerbate hyperthyroid lid lag and stare.

Multiple choice
  1. It develops when the immune system mistakenly targets the substance covering your optic nerve (myelin), resulting in inflammation and damage to the myelin.

  2. The only treatment is retinal transplant.

  3. Its symptoms are blood sugar levels increase in the body and redness occurs in limbs.

  4. It is non-curable.

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Optic neuritis is an inflammation of the optic nerve, the bundle of nerve fibres that transmits visual information from your eye to your brain. Pain and temporary vision loss are common symptoms of optic neuritis. Optic neuritis is highly associated with multiple sclerosis, a disease that causes inflammation and damage to nerves in your brain and spinal cord. In some people, signs and symptoms of optic neuritis may be the first indication of multiple sclerosis. Most people who have a single episode of optic neuritis eventually recover their vision. Treatment with steroid medications may speed up vision recovery after optic neuritis.