What kind of lens of the eye ?

What kind of lens of the eye ?
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1 Answer

Answer :

Eye lens convex lens.
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Description : How can you tell you have part of a contact lens in your eye, and how can you get it out without further irritation?

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Can you get anti-glare put on after you get an eye-glass lens prescription filled?

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What is the reflection formed in the eye lens ?

Description : What is the reflection formed in the eye lens ?

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Is it safe to fix eye contact lens?

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Last Answer : Contact lenses are really fascinating to look at especially with different colors in it. But precautions about wearing budgeted contact lenses, as they might irritate your eyes while wearing them. You have to be persistent ... and added some features to the woman's eye. But, i don't wear any of it.

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Description : Proteins found in eye lens is

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Last Answer : Protein present in eye lens is : A. Opsin B. Collagen C. Crystalline D. Rhodopsin

Can I ask for eye exam fee for contact lens ?

Description : Can I ask for eye exam fee for contact lens ?

Last Answer : Unfortunately no one offers free eye exams for contact lenses, only for eye glasses. The places that offer free eye exams for glasses often offer cheap contact lens exams. America's Best is one of those ... price as the contact lens exam and then you get free exams for the next couple of years.

Is contact lens exam the same thing as vision eye exam?

Description : Is contact lens exam the same thing as vision eye exam?

Last Answer : I believe the exam is the same, but with the contact lens exam the optometrist checks and measures your eyes for the proper fitting of contacts.

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Description : The sites for gluconeogenesis are (A) Liver and kidney (B) Skin and pancreas (C) Lung and brain (D) Intestine and lens of eye

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When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for little while because ______ A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... is unable to dilate the pupil immediately D. Distance between the lens and retina take time to adjust

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Which part of the camera is analogue to the retina in the human eye? A. Lens B. Film C. Aperture D. Shutter

Description : Which part of the camera is analogue to the retina in the human eye? A. Lens B. Film C. Aperture D. Shutter

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When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive momentarily (c) iris is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Description : When a person enters a dark room from bright light, he is not able to see clearly for a little while because the (a) eye is unable to adjust itself immediately (b) retina becomes insensitive ... is unable to dilate the pupil immediately (d) distance between the lens and retina takes time to adjust

Last Answer : Ans:(c)

Which part of the camera is analogous to the retina in the human eye? (a) Lens (b) Film (c) Aperture (d) Shutter

Description : Which part of the camera is analogous to the retina in the human eye? (a) Lens (b) Film (c) Aperture (d) Shutter

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When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye lens (b) The retina retains the bright images for some time and becomes momentarily insensitive (c) The iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Description : When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because (a) The eye muscles cannot immediately change the focal length of the eye ... iris is unable to contract the pupil immediately (d) The iris is unable to dilate the pupil immediately

Last Answer : Ans:(d)

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Description : In eye donation, which one of the following parts of donor's eye is utilized? (1) Iris (2) Lens (3) Cornea (4) Retina

Last Answer : (3) Cornea Explanation: Generally blindness is caused by the dryness and hardness of cornea. Cornea is a clear layer which helps passing of light. It is an outer layer and can be transfer from one person to another.

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Description : The part of the eye having the largest refractive index is - (1) cornea (2) aqueous humor (3) lens (4) vitreous humor

Last Answer : (3) lens Explanation: Like a camera, the human eye uses a convex lens system to form a small, inverted, real image of an object in front of it. Lens is the part of the eye having the largest refractive index.

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Description : `Short-sight' in human eye can be corrected by using proper – (1) convex lens (2) concave lens (3) cylindrical lens (4) bifocal lens

Last Answer : (2) concave lens Explanation: Scintillation or twinkling is generic terms for variations in apparent brightness or position of a distant luminous object viewed through a medium. If ... is termed astronomical scintillation; within the atmosphere, the phenomenon is termed terrestrial scintillation.

The part of the eye having the larges refractive index is : (1) cornea (2) aqueous humor (3) lens (4) vitreous humor

Description : The part of the eye having the larges refractive index is : (1) cornea (2) aqueous humor (3) lens (4) vitreous humor

Last Answer : (3) lens Explanation: The cornea represents the strongest part of the refracting power of the eye, providing about 80% of the power of the system. The index of refraction of the cornea is about 1. ... into the watery fluid known as the aqueous humor which has an index of refraction of about 1.336.

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

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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.

In eye donation, which one of the following parts of donor’s eye is utilized ? A. Iris B. Lens C. Cornea (Answer) D. Retina

Description : In eye donation, which one of the following parts of donor’s eye is utilized ? A. Iris B. Lens C. Cornea (Answer) D. Retina

Last Answer : C. Cornea (Answer)

When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive momentarily C. Iris is unable to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Description : When a person enters a dark room from bright light he is not able to see clearly for a little while because the? A. Eye is unable to adjust itself immediately B. Retina becomes insensitive ... to dilate the pupil immediately (Answer) D. Distance between the lens and retina take time to adjust

Last Answer : C. Iris is unable to dilate the pupil immediately (Answer)

Which part of the Camera is analogue to the retina in the human eye? A. Lens B. Film (Answer) C. Aperture D. Shutter

Description : Which part of the Camera is analogue to the retina in the human eye? A. Lens B. Film (Answer) C. Aperture D. Shutter

Last Answer : B. Film (Answer)

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)

During accommodation for near: a. the spherical aberration of the eye increases b. the ciliary muscle relaxes c. the field of vision decreases d. the amount of light entering the eye increases e. the thickness of the lens increases

Description : During accommodation for near: a. the spherical aberration of the eye increases b. the ciliary muscle relaxes c. the field of vision decreases d. the amount of light entering the eye increases e. the thickness of the lens increases

Last Answer : the thickness of the lens increases

Eye lens is formed from (a) ectoderm (b) mesoderm (c) endoderm (d) ectoderm and mesoderm.

Description : Eye lens is formed from (a) ectoderm (b) mesoderm (c) endoderm (d) ectoderm and mesoderm.

Last Answer : (a) ectoderm

Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Description : Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eye lids (d) alter the size of pupil.

Last Answer : (d) alter the size of pupil.

Light rays entering the eye is controlled by (a) pupil (b) iris (c) cornea (d) lens.

Description : Light rays entering the eye is controlled by (a) pupil (b) iris (c) cornea (d) lens.

Last Answer : (a) pupil

Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions characteristics. (a) C-Aqueous chamber-Reflects the light which does not pass through the lens. (b) D - Choroid - Its anterior part forms ciliary body. (c) A - Retina - Contains photoreceptors, i.e., rods and cones. (d) B - Blind spot-Has only a few rods and cones.

Description : Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions characteristics. (a) C-Aqueous chamber-Reflects the light which does not ... , i.e., rods and cones. (d) B - Blind spot-Has only a few rods and cones.

Last Answer : (c) A - Retina - Contains photoreceptors, i.e., rods and cones.

The transparent lens in the human eye is held in its place by (a) ligaments attached to the ciliary body (b) ligaments attached to the iris (c) smooth muscles attached to the iris (d) smooth muscles attached to the ciliary body

Description : The transparent lens in the human eye is held in its place by (a) ligaments attached to the ciliary body (b) ligaments attached to the iris (c) smooth muscles attached to the iris (d) smooth muscles attached to the ciliary body

Last Answer : (a) ligaments attached to the ciliary body

Pick up the correct specification of Ramsden eyepiece from the following: (A) It consists of two equal piano convex lenses (B) The curved surfaces of Plano-convex lenses face each other (C) The distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam (D) All the above

Description : Pick up the correct specification of Ramsden eyepiece from the following:  (A) It consists of two equal piano convex lenses  (B) The curved surfaces of Plano-convex lenses face each other  (C) ... from a point on the diaphragm enter the eye as a  parallel beam  (D) All the above 

Last Answer : (D) All the above 

How focal length is affected when the lens of eye becomes thicker?

Description : How focal length is affected when the lens of eye becomes thicker?

Last Answer : In order to look something near to eye, ciliary muscles make the lens thicker and its focal length becomes shorter. So the image is formed on retina instead of point beyond it.

Ramsden eye-piece consists of (A) Two convex lenses short distance apart (B) Two concave lenses short distance apart (C) One convex lens and one concave lens short distance apart (D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other

Description : Ramsden eye-piece consists of (A) Two convex lenses short distance apart (B) Two concave lenses short distance apart (C) One convex lens and one concave lens short distance apart (D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other

Last Answer : (D) Two Plano-convex lenses short distance apart, with the convex surfaces facing each other

The cranial nerve that is responsible for muscles that move the eye and lid is the _____________________ nerve. a) oculomotor The oculomotor (III) cranial nerve is also responsible for pupillary constriction and lens accommodation.

Description : The cranial nerve that is responsible for muscles that move the eye and lid is the _____________________ nerve. a) oculomotor The oculomotor (III) cranial nerve is also responsible for pupillary constriction ... (VII) nerve is responsible for salivation, tearing, taste, and sensation in the ear.

Last Answer : a) oculomotor The oculomotor (III) cranial nerve is also responsible for pupillary constriction and lens accommodation.

Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects. b) Presbycusis Presbycusis refers to age-related hearing loss. c) Cataract Cataract is the development of opacity of the lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

Description : Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in ... lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

Last Answer : a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects.

Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs (c) Temporary adjustments of the dumpy level are to be performed at every set up (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings

Description : Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is ... (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings

Last Answer : (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs

The ability of the eye to change the focal length of its lens to see distant object is _______ a)accommodation b)adjustment c)change d)pinch

Description : The ability of the eye to change the focal length of its lens to see distant object is _______ a)accommodation b)adjustment c)change d)pinch

Last Answer : a)accommodation

_________ is liquid present in the space between the cornea and lens of the eye. a)aqueous humor b)vitreous humor c)humor d)mucous

Description : _________ is liquid present in the space between the cornea and lens of the eye. a)aqueous humor b)vitreous humor c)humor d)mucous

Last Answer : a)aqueous humor

The _______ the amount of light entering the eye. a)iris b)pupil c)cornea d)lens

Description : The _______ the amount of light entering the eye. a)iris b)pupil c)cornea d)lens

Last Answer : a)iris

The transparent lens in the human eye is held in its place by (1) ligaments attached to the ciliary body (2) ligaments attached to the iris (3) smooth muscles attached to the iris (4) smooth muscles attached to the ciliary body

Description : The transparent lens in the human eye is held in its place by (1) ligaments attached to the ciliary body (2) ligaments attached to the iris (3) smooth muscles attached to the iris (4) smooth muscles attached to the ciliary body

Last Answer : (1) ligaments attached to the ciliary body

What is the name given to the jellylike substance filling the chamber behind the lens of the human eye?

Description : What is the name given to the jellylike substance filling the chamber behind the lens of the human eye? 

Last Answer : ANSWER: vitreous body vitreous humor

The part of the eye having the larges refractive index is : (1) cornea (2) aqueous humor (3) lens (4) vitreous humor

Description : The part of the eye having the larges refractive index is : (1) cornea (2) aqueous humor (3) lens (4) vitreous humor

Last Answer : lens