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

Approved eye protection is worn in the lab

  1. to avoid eye strain

  2. only if you do not have corrective glasses

  3. to improve your vision

  4. any time chemicals, heat, or glassware are used
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eye protection is required whenever there is a risk of splashes, flying debris, or chemical exposure. This is a mandatory safety practice.

Multiple choice physics motion and measurement measuring length measurement of small and large distances measurement of distance

Error due to eye vision is termed as :

  1. climax error

  2. sight error

  3. parallax error

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

$Answer:-$ C

Parallax also affects optical instruments such as rifle scopes, binoculars,microscope and twin lens reflex cameras that view objects from slightly different angles. Many animals, including humans, have two eyes with overlapping visual fields that use parallax to gain depth perception; this process is known as stereopsis.

Multiple choice chemistry adsorption and colloids applications of colloids colloids around us the colloidal state

The colloidal sol found effective in the treatment of eye disease is:

  1. colloidal sulphur

  2. colloidal antimony

  3. colloidal silver

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

Colloidal silver has also been said to help prevent eye infections in infants when colloidal silver eye drops are used. It is also used for medical purposes including as disinfectants and microbiocides. Silver has also been added to bandages and dressings, and to the coating of medical instruments.

Multiple choice zoology our health introduction to health and disease health and its failure health and its significance

Vision problem occurring in old age is known as:

  1. Myopia

  2. Presbyopia

  3. Hypermetropia

  4. Anepia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Presbyopia is a condition that occurs due to the loss of the flexibility of lens with the old age. It creates difficulty in focussing on near objects. It can be corrected by using convex lens. 

Myopia or nearsightedness is a condition in which the eyeball is longer than normal. Light rays converge in front of retina forming a blurred image. The condition can be corrected by using concave lens. 
Hypermetropia or farsightedness is a condition in which the eyeball is shorter than the normal. Light rays strike the retina before converging causing a blurred image. The condition can be corrected by using convex lens. 
Anepia is a cognitive disorder marked by an impaired ability to comprehend or express language in its written or spoken form. 
Thus, the correct answer is option B.

Multiple choice evs let's clean together cleanliness who will do this work? personal and public cleanliness

Conjunctivitis can spread through the use of common

  1. Handkerchief.

  2. Towel.

  3. Comb.

  4. Both A and B.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Conjunctivitis is the inflammation of the conjunctiva which is caused due to bacteria. The bacterial growth in the eye may result in reddening, swelling and watering of the eyes. The infection is contagious and spreads from one infected person to other. The towel or the handkerchief which is used to wipe the eye is the source of transmission of the bacterial infection. The other person using the items may also suffer from infection. 

Thus, the correct answer is option D. 

Multiple choice structure of human eye human eye and colourful world

Astigmatism occurs when the cornea does not have a truly spherical shape. This defect can be cured by the use of a :

  1. concave lens

  2. cylindrical lens

  3. convex lens

  4. plano-convex lens
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Astigmatism occurs when the cornea does not have a truly spherical shape. This defect can be cured by the use of a convex lens.

Multiple choice structure of human eye human eye and colourful world

A student of class $  10,  $ is not able to see clearly the black board question when seated at a distance of $5  \mathrm{m}  $ from the board,the defect he is suffering from is

  1. Myopia

  2. Hypermetropia

  3. Presbyopia

  4. Astigmatism
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If a student cannot see distant objects (like a blackboard) clearly, they are suffering from myopia (nearsightedness).

Multiple choice structure of human eye human eye and colourful world

Myopia is a defect of vision caused by

  1. decrease in the retinal distance from the lens

  2. a decrease in the diameter of the eyeball

  3. an increase in the thickness of the lens

  4. an increase in the curvature of the lens
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Myopia is primarily caused by an elongated eyeball or an increase in the curvature of the lens, both of which cause light to converge in front of the retina instead of on it.

Multiple choice structure of human eye human eye and colourful world

A person who can see distant objects clearly but cannot see near objects clearly is said to be myopia

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Long slighted, also know as hyperopia person ability to see objects close to them, these Vision problems are also referred as refractive errors.

In this, a person usually can see a distant object clearly but nearby objects will be out of focus.
Multiple choice structure of human eye human eye and colourful world

The inability among the elderly to see nearby objects clearly because of the weakaning of the ciliary muscles is called

  1. Far-sightedness

  2. Near-sightedness

  3. Presbyopia

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

The inability among the elderly to see nearby objects clearly because of the weakening of the ciliary muscles is called presbyopia.

Multiple choice biology body fluids and circulation cardiac disorders cardiac regulation and disorders the blood system

High blood pressure is called as

  1. Hypotension

  2. Hypermetropia

  3. Hypertension

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

Hypertension is the term for high blood pressure when blood pressure is higher than normal (normal 120/80 mmHg). In this measurement 120 mm Hg (millimeters of mercury pressure) is the systolic, or pumping pressure and 80 mm Hg is the diastolic, or resting pressure. If repeated checks of blood pressure of an individual are 140/90 (140 over 90) or higher, it shows hypertension. High blood pressure leads to heart diseases and also affects vital organs like brain and kidney.

So, the correct answer is option C.

Multiple choice biology human health and disease drug, tobacco and alcohol consumption addiction and dependence community health and hygiene

Consumption of methanol can result in blindness; Since it

  1. Inhibits neurotransuitter GABA

  2. Is released from retina

  3. Generally damages optic nerve

  4. Is stored in cornea and tear glands
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The consumption of methanol causes 'Toxic Optic Neuropathy' (TON). It is caused when the optic nerve is damaged by toxin which leads to visual impairment. This condition often presents as a painless, progressive, bilateral, symmetrical visual decline with variable optic nerve head damage. So, the correct answer is option C.

Multiple choice oil, fibres, spices and medicine producing plants plant kingdom and the environment around us some important plants uses of plants as medicine

Which of the following is used in eye inflammation and for curing night blindness

  1. Atropa belladonna

  2. Cichorium intybus

  3. Eclipta alba

  4. Emilia sonchifolia

  5. Centipeda orbicularis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Emilia sonchifolia is a medicinal plant known for its use in treating eye inflammation and night blindness in traditional medicine.