Among the defects of eye, the shortsightedness is called - (1) coma (2) hypermetropia (3) myopia (4) astigmatism

Among the defects of eye, the shortsightedness is called - (1) coma (2) hypermetropia (3) myopia (4) astigmatism
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(3) myopia Explanation: Myopia, commonly known as being nearsighted and shortsighted. It is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it. This causes 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. Eye care professionals most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, though there are cases of associated side effects.
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Among the defects of eye, the shortsightedness is called (1) coma (2) hypermetropia (3) myopia (4) astigmatism

Description : Among the defects of eye, the shortsightedness is called (1) coma (2) hypermetropia (3) myopia (4) astigmatism

Last Answer : myopia

Distant objects are visible as a little out of focus in this condition – (1) presbiopia (2) hypermetropia (3) astigmatism (4) myopia

Description : Distant objects are visible as a little out of focus in this condition – (1) presbiopia (2) hypermetropia (3) astigmatism (4) myopia

Last Answer : (4) myopia Explanation: Myopia, also known as 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 ... at a distant object to be out of focus, but in focus when looking at a close object.

Cylindrical lens is used by a person suffering from - (1) astigmatism (2) myopia (3) hypermetropia (4) None of these

Description : Cylindrical lens is used by a person suffering from - (1) astigmatism (2) myopia (3) hypermetropia (4) None of these

Last Answer : (1) astigmatism Explanation: A cylindrical lens is typically used to focus, condense or expand incoming light. A cylindrical lens has one cylindrical surface, causing light to be focused in a single dimension or axis.

Distant objects are visible as a little out of focus in this condition : (1) presbiopia (2) hypermetropia (3) astigmatism (4) myopia

Description : Distant objects are visible as a little out of focus in this condition : (1) presbiopia (2) hypermetropia (3) astigmatism (4) myopia

Last Answer : myopia

Ability of the eye to see objects at all distances is called (a) Binocular vision (b) Myopia (c) Hypermetropia (d) Accommodation

Description : Ability of the eye to see objects at all distances is called (a) Binocular vision (b) Myopia (c) Hypermetropia (d) Accommodation

Last Answer : Ans:(d)

______ is the defect which occurs in eye due to excessive curvature of cornea and person is not able to see distant objects clearly . a)myopia b)hypermetropia c)squint d)cataract

Description : ______ is the defect which occurs in eye due to excessive curvature of cornea and person is not able to see distant objects clearly . a)myopia b)hypermetropia c)squint d)cataract

Last Answer : a)myopia

A man cannot see clearly beyond 10 meters. The disease he suffers from : (1) Far sight (2) Myopia (3) Cataract (4) Hypermetropia

Description : A man cannot see clearly beyond 10 meters. The disease he suffers from : (1) Far sight (2) Myopia (3) Cataract (4) Hypermetropia

Last Answer : (2) Myopia Explanation: The man suffers from myopia, a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness occurs if the eyeball is too ... a result, the light entering the eye isn't focused correctly and distant objects look blurred.

A man cannot see clearly beyond 10 meters. The disease he suffers from : (1) Far sight (2) Myopia (3) Cataract (4) Hypermetropia

Description : A man cannot see clearly beyond 10 meters. The disease he suffers from : (1) Far sight (2) Myopia (3) Cataract (4) Hypermetropia

Last Answer : Myopia

Myopia is the same as (1) Near sightedness (2) Astigmatism (3) Presbyopia (4) Long sightedness

Description : Myopia is the same as (1) Near sightedness (2) Astigmatism (3) Presbyopia (4) Long sightedness

Last Answer : Near sightedness 

A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic (A) Spherical aberration (B) Chromatic aberration (C) Coma (D) Astigmatism

Description : A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic (A) Spherical aberration (B) Chromatic aberration (C) Coma (D) Astigmatism

Last Answer : (A) Spherical aberration

The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as (A) Chromatic aberration (B) Spherical aberration (C) Astigmatism (D) Coma

Description : The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as (A) Chromatic aberration (B) Spherical aberration (C) Astigmatism (D) Coma

Last Answer : (A) Chromatic aberration

Which is used to remove astigmatism for a human eye? -Do You Know?

Description : Which is used to remove astigmatism for a human eye? -Do You Know?

Last Answer : answer:

Which one of the following is used to remove Astigmatism for a human eye? (1) Concave lens (2) Convex lens (3) Cylindrical lens (4) Prismatic lens

Description : Which one of the following is used to remove Astigmatism for a human eye? (1) Concave lens (2) Convex lens (3) Cylindrical lens (4) Prismatic lens

Last Answer : (3) Cylindrical lens Explanation: In Astigmatism, eye cannot see objects in two orthogonal directions clearly simultaneously. This abnormality is removed by using cylindrical lens.

Which one of the following is used to remove Astigmatism for a human eye? (1) Concave lens (2) Convex lens (3) Cylindrical lens (4) Prismatic lens

Description : Which one of the following is used to remove Astigmatism for a human eye? (1) Concave lens (2) Convex lens (3) Cylindrical lens (4) Prismatic lens

Last Answer : (3) Cylindrical lens Explanation: A cylindrical lens is a lens which focuses light into a line instead of a point, as a spherical lens would.

Myopia is a defect of Human eye. it can be corrected by using a lens called? A. Convex lens B. Concave lens (Answer) C. Cylindrical lens D. Plano convex lens E. None of these

Description : Myopia is a defect of Human eye. it can be corrected by using a lens called? A. Convex lens B. Concave lens (Answer) C. Cylindrical lens D. Plano convex lens E. None of these

Last Answer : B. Concave lens (Answer)

The person suffering from “myopia” cannot see the objects at: (1) Near distance (2) Longer distance (3) any distance (4) Close to eye

Description : The person suffering from “myopia” cannot see the objects at: (1) Near distance (2) Longer distance (3) any distance (4) Close to eye

Last Answer : (2) Longer distance Explanation: Nearsightedness, also known as myopia, is a common type of refractive error where close objects appear clearly, but distant objects appear blurry.

What are the common eye defects in children ?

Description : What are the common eye defects in children ?

Last Answer : Usually there are 4 types of defects in the eyes of children. Namely: 1. Myopia or short sight Hypermetropia or long sight 3. Presbyopia 4 . Astigmatism _

Mention the common defects of the eye.

Description : Mention the common defects of the eye.

Last Answer : a) Myopic or short sight b) Hyper-metropia or long sight c) Presbyopia d) Nyctolopia or night blindness e) Cataract

Write down the some defects of human eye?

Description : Write down the some defects of human eye?

Last Answer : Far Sighted Vision: - In this defect image is formed behind the retina. The cornea and the lens cannot bend the light rays on retina. To treat this defect artificial lenses are used that ... In this defect a person cannot distinguish between green and red colours and is called colour blind. 

Explain the defects in human eye.

Description : Explain the defects in human eye.

Last Answer : I. Short-sightedness (Myopia) In short-sightedness a person can see near objects clearly but distant object appear blurred. Reason When the eye lens becomes much thicker or eyeball becomes too ... before they enter the eye. They are further bent by the eye lens to meet at the retina.

For a person having hypermetropia, the near point is ______. (1) Greater than 20cm (2) Lesser than 25cm (3) Greater than 25cm (4) Lesser than 30cm

Description : For a person having hypermetropia, the near point is ______. (1) Greater than 20cm (2) Lesser than 25cm (3) Greater than 25cm (4) Lesser than 30cm

Last Answer : (3) Greater than 25cm Explanation: The near point of a person suffering from hypermetropia is 75 cm. calculate. The near point of a person suffering from hypermetropia is 75 cm. Calculate the focal length ... lens required to enable him to read the newspaper which is kept at 25 cm from the eye.

For a person having hypermetropia, the near point is – (1) greater than 25 cm (2) greater than 50 cm (3) less than 25 cm (4) infinity

Description : For a person having hypermetropia, the near point is – (1) greater than 25 cm (2) greater than 50 cm (3) less than 25 cm (4) infinity

Last Answer : (1) greater than 25 cm Explanation: For a hyper-metropic eye ,the near points shift away from the eye Le. farther away from the normal near point (25cm). In a hypermetropic eye, the light ... behind the retina. Here a person sees well for distance but near vision is difficult and causes strain.

Give reason: A convex lens is used to correct hypermetropia.

Description : Give reason: A convex lens is used to correct hypermetropia.

Last Answer : In a hypermetropic eye, light is focused behind the retina. A convex lens will force it to form on the retina. Hence a convex lens is used to correct hypermetropia.

Rajat has hypermetropia. What type of lens will be the ophthalmologist recommend to correct his vision?

Description : Rajat has hypermetropia. What type of lens will be the ophthalmologist recommend to correct his vision?

Last Answer : Convex

Hypermetropia or longsight can be corrected by using : (1) Bifocal lenses (2) Cylindrical lenses (3) Concave lenses (4) Convex lenses

Description : Hypermetropia or longsight can be corrected by using : (1) Bifocal lenses (2) Cylindrical lenses (3) Concave lenses (4) Convex lenses

Last Answer : Convex lenses

For a person having hypermetropia, the near point is (1) greater than 25 cm (2) greater than 50 cm (3) less than 25 cm (4) infinity

Description : For a person having hypermetropia, the near point is (1) greater than 25 cm (2) greater than 50 cm (3) less than 25 cm (4) infinity

Last Answer :  greater than 25 cm

How long after I have had vertigo is it safe to wear my new glasses? 1st time ever wearing glasses and I have astigmatism?

Description : How long after I have had vertigo is it safe to wear my new glasses? 1st time ever wearing glasses and I have astigmatism?

Last Answer : That’s a good question. I don’t know much about vertigo. But, I know with my glasses I cannot walk when I wear them becuase the floor is in the wrong place. I would guess if you tend to spin that kind of thing might be discombobulating. But, I don’t know if it could be a trigger.

Do you have an astigmatism and wear contacts?

Description : Do you have an astigmatism and wear contacts?

Last Answer : answer:Yes. I've got really bad vision and an astigmatism and have worn contacts for years. They are getting much better and the ones I've been the happiest with have been the Acuvue Oasys. They ... Hopefully you won't need Toric lenses, but I've heard those are really comfortable these days, too.

Can (or should) someone with a slight astigmatism get contacts?

Description : Can (or should) someone with a slight astigmatism get contacts?

Last Answer : answer:There are contacts that correct for astigmatism but they can be irritating-they're weighted, so that they stay aligned on a vertical axis, and in theory, they shift slightly with each blink. I never ... fine, especially if you're only wearing them while running. It wasn't a big deal for me.

Do i need to wear glasses for a while before getting contacts for my astigmatism?

Description : Do i need to wear glasses for a while before getting contacts for my astigmatism?

Last Answer : answer:I have an astigmatism and I own both glasses and contacts. There is no real reason you can't start with the contacts, but you will want to buy a back-up pair of glasses anyway ( ... just a year's supply of disposable contact lenses - even if they are the specialized contacts for astigmatism.

What are Symptoms of astigmatism How to treat astigmatism?

Description : What are Symptoms of astigmatism How to treat astigmatism?

Last Answer : What does astigmatism meanA type of visual impairment. Due to the irregular curvature of the cornea or lens surface in the eyeball, the focal point formed by the ... The refractive index variesSymptoms of astigmatism1.Decreased vision2.Asthenopia3.Compensation for head position and squinting

Astigmatism?

Description : Astigmatism?

Last Answer : DefinitionAstigmatism is an eye disorder in which the cornea (the clear tissue covering the front of the eye) is abnormally curved, causing out-of-focus vision.Causes, incidence, and risk factorsThe ... respond to questions can have the degree of their vision problem measured by a test that us

What brand of contact lens are made for astigmatism?

Description : What brand of contact lens are made for astigmatism?

Last Answer : Yes, there are indeed contact mafe for people with astigmatism. Acuvue makes a great set of contacts for people with astigmatism.

Can astigmatism be corrected by lenses during cataract surgery?

Description : Can astigmatism be corrected by lenses during cataract surgery?

Last Answer : What's possible in today's world of eyecare is simply amazing. There are now specialty lenses that treat astigmatism that are used after cataract surgery, effectively improving the patient's vision.

Are there contacts that correct astigmatism?

Description : Are there contacts that correct astigmatism?

Last Answer : Depending on the degree of astigmatism, it is often possible to correct it with contacts. These type of contacts are called "toric" contacts and reshape the cornea to correct astigmatism.

Can astigmatism be corrected with laser vision surgery?

Description : Can astigmatism be corrected with laser vision surgery?

Last Answer : There are two types of astigmatisms, corneal astigmatism and lenticular astigmatism. Both of these types can be addressed and corrected by laser eye surgery.

Which one of the following lenses should be used to correct the defect of astigmatism? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens

Description : Which one of the following lenses should be used to correct the defect of astigmatism? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens

Last Answer : (1) Cylindrical lens Explanation: Astigmatism is an optical defect in which vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image ... lens, and cannot be corrected by standard spectacle lenses, but can be corrected by contact lenses.

What is astigmatism? How can it be corrected?

Description : What is astigmatism? How can it be corrected?

Last Answer : Astigmatism is a defect in which, a person looking at horizontal or vertical lines appears distorted. It is caused due to the unevenness of the crystalline lens. It can be corrected by using cylindrical lenses.

Which one of the following lenses should be used to correct the defect of astigmatism ? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens

Description : Which one of the following lenses should be used to correct the defect of astigmatism ? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens

Last Answer : Cylindrical lens

In CRO astigmatism is:

Description : In CRO astigmatism is:

Last Answer : In CRO astigmatism is: An additional focus control

What is myopia ?

Description : What is myopia ?

Last Answer : : Myopia is one of the 4 major diseases of the eye.

What type of lens is used to correct vision of a person suffering from Myopia?

Description : What type of lens is used to correct vision of a person suffering from Myopia?

Last Answer : Concave lens

Myopia is a disease connected with – (1) Lungs (2) Brain (3) Ears (4) Eyes

Description : Myopia is a disease connected with – (1) Lungs (2) Brain (3) Ears (4) Eyes

Last Answer : (4) Eyes Explanation: Myopia, commonly known as nearsightedness, is a vision condition in which close objects are seen clearly, but objects' farther away appear blurred. It occurs if the eyeball ... eye has too much curvature. Concave lenses or corrective surgery is used to correct this defect.

Which one of the following is a hereditary disease? (1) Haemophilia (2) Myopia (3) Anaemia (4) Leukemia

Description : Which one of the following is a hereditary disease? (1) Haemophilia (2) Myopia (3) Anaemia (4) Leukemia

Last Answer : (1) Haemophilia Explanation: Hemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation, which is used to stop bleeding when a ... been associated with royal families due to inbreeding, and is sometimes called the 'Royal Disease.'

What type of lens is used to correct vision of a person suffering from Myopia? (1) Convex lens (2) Concave lens (3) Crossed lens (4) Cylindrical lens

Description : What type of lens is used to correct vision of a person suffering from Myopia? (1) Convex lens (2) Concave lens (3) Crossed lens (4) Cylindrical lens

Last Answer : (2) Concave lens Explanation: Near-sightedness, also known as short-sightedness and myopia, is a condition of the eye where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal.

Persons suffering from myopia are advised to use – (1) convex lens (2) concave lens (3) piano-convex lens (4) plano-concave lens

Description : Persons suffering from myopia are advised to use – (1) convex lens (2) concave lens (3) piano-convex lens (4) plano-concave lens

Last Answer : (2) concave lens Explanation: A concave lens is used to correct short-sightedness (myopia). In myopia, images are formed in front of the retina, resulting in a blurred image. This occurs when the ... too long or the refractive powers of the cornea and lens of the eye are relatively too strong.

Myopia and Hypropia

Description : Myopia and Hypropia

Last Answer : Myopia - nearsightedness, condition of the eyes in which objects that are far away cannot be seen clearly (Ophthalmology); lack of insight and forethought Hyperopia - far-sightedness, ability to see distant objects more clearly than near ones

Myopia is connected with?

Description : Myopia is connected with?

Last Answer : eyes

How is Myopia corrected?

Description : How is Myopia corrected?

Last Answer : Concave lens

Give reason: A concave lens is used to correct myopia.

Description : Give reason: A concave lens is used to correct myopia.

Last Answer : In a myopic eye light falls too short from the retina. A concave lens forces light to fall on the retina. Hence concave lens is used to correct myopia.