What causes the blind spot in the visual field?

What causes the blind spot in the visual field?
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Some blind spots can be caused by a simple migraine, while others can be caused by glaucoma, macular degeneration, or retinal detachment. A retinal detachment is a disorder in which the retina separates from the layer underneath. ... See your eye care professional quickly if think you have a blind spot in your vision
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When people who have been blind since birth dream, do their dreams have a visual aspect to them?

Description : When people who have been blind since birth dream, do their dreams have a visual aspect to them?

Last Answer : I would say not. Thinking that they might would be similar to assuming that blind people “see” black.

Do blind people dream in visual images? -Do You Know?

Description : Do blind people dream in visual images? -Do You Know?

Last Answer : Yes, blind people do indeed dream in visual images. For people who were born with eyesight and then later went blind, it is not surprising that they experience visual sensations while dreaming. ... is more surprising is the discovery that people who were born blind also dream in visual images.

When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Description : When making a blind transmission you should: a. Transmit the message twice b. Transmit each word twice c. Repeat the message on 121.5 MHz d. Wait for visual signals

Last Answer : a. Transmit the message twice

What is the difference between blind spot and yellow spot? -Biology

Description : What is the difference between blind spot and yellow spot? -Biology

Last Answer : answer:

What is a blind spot ?

Description : What is a blind spot ?

Last Answer : The point at which the retina and the optic nerve meet and where the reflection of the object is not formed is called the blind point. This part does not have any rod cells or cone cells , so it is not light sensitive.

Where is the blind spot located ?

Description : Where is the blind spot located ?

Last Answer : The blind spot is located at the junction of retina and optic nerve.

Do large vehicles have a larger blind spot?

Description : Do large vehicles have a larger blind spot?

Last Answer : They can. Very large vehicles can have very large blindspots.

A person wears spectators with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes – (1) behind the retina (2) in front of the retina (3) on the retina (4) on the blind spot

Description : A person wears spectators with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes – (1) behind the retina (2) in front of the retina (3) on the retina (4) on the blind spot

Last Answer : (2) in front of the retina 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 ... relatively too long or the refractive powers of the cornea and lens of the eye are relatively too strong.

Give reason: a) When we suddenly enter a cinema hall, we will not be able to see any objects.b) There is no image formation at blind spot.

Description : Give reason: a) When we suddenly enter a cinema hall, we will not be able to see any objects.b) There is no image formation at blind spot.

Last Answer : a) When we suddenly enter a cinema hall, we will not be able to see any objects. Our eyes take some time to adjust to the light in the surroundings. When we are in bright area pupil constricts. ... region where the optic nerve exits the eye ball. There are no sensory cells. Hence no image is formed.

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it? (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs (b) Wings of honeybee and wings of crow - homologous organs (c) Thorn of Bougainvillea and tendrils of Cucurbita - analogous organs (d) Nictitating membrane and blind spot in human eye - vestigial organs

Description : Which one of the following pairs of items correctly belongs to the category of organs mentioned against it? (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs ( ... Cucurbita - analogous organs (d) Nictitating membrane and blind spot in human eye - vestigial organs

Last Answer : (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs

Select the answer with correct matching of the structure, its location and function. Structure Location Function (a) Eustachian Anterior Equalizes air tube part of pressure on internal ear either sides of tympanic membrane (b) Cerebellum Midbrain Controls respiration and gastric secretions (c) Hypothal Forebrain Controls body -amus temperature, urge for eating and drinking (d) Blind spot Near the place Rods and cones where optic are present but nerve leaves inactive here the eye

Description : Select the answer with correct matching of the structure, its location and function. Structure Location Function (a) Eustachian Anterior Equalizes air tube part of pressure on internal ear either sides ... the place Rods and cones where optic are present but nerve leaves inactive here the eye

Last Answer : (c) Hypothal Forebrain Controls body -amus temperature, urge for eating and drinking

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 junction of optic nerve and retina is insensitive to light and no image is formed here , it is known as ______. a)blind spot b)yellow spot c) fovea d)pupil

Description : The junction of optic nerve and retina is insensitive to light and no image is formed here , it is known as ______. a)blind spot b)yellow spot c) fovea d)pupil

Last Answer : a)blind spot

All the following associated open angle glaucoma include all the following except: a. Roenne’s nasal step b. Enlarged blind spot c. Generalized depression of isopters d. Loss of central fields e. Tubular vision

Description : All the following associated open angle glaucoma include all the following except: a. Roenne’s nasal step b. Enlarged blind spot c. Generalized depression of isopters d. Loss of central fields e. Tubular vision

Last Answer : ANSWER: D  

A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes (1) behind the retina (2) in front of the retina (3) on the retina (4) on the blind spot

Description : A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes (1) behind the retina (2) in front of the retina (3) on the retina (4) on the blind spot

Last Answer : in front of the retina

Blind spot is a point in the zones of protection where

Description : Blind spot is a point in the zones of protection where

Last Answer : Blind spot is a point in the zones of protection where No protection is available.

Bcc field contains the list of recipients. Bcc stands for (a) Basic carbon copy (b) Blind carbon copy -Technology

Description : Bcc field contains the list of recipients. Bcc stands for (a) Basic carbon copy (b) Blind carbon copy -Technology

Last Answer : (b) Bcc denotes the Blind carbon copy.

You want to put up a mirror at a blind corner in a building. Which of the following will give you the largest field of view? Is it a: w) convex mirror x) concave mirror y) cylindrical mirror z) plane mirror

Description : You want to put up a mirror at a blind corner in a building. Which of the following will give you the largest field of view? Is it a: w) convex mirror x) concave mirror y) cylindrical mirror z) plane mirror

Last Answer : ANSWER: W -- CONVEX MIRROR

A short in the shunt field of a DC motor is best located by _____________. A. visual inspection of the commutator B. applying AC voltage to each field coil and measuring the voltage drop across each field coil C. using a growler and hacksaw blade D. isolating each coil from the others and using a megohmmeter

Description : A short in the shunt field of a DC motor is best located by _____________. A. visual inspection of the commutator B. applying AC voltage to each field coil and measuring the voltage drop across ... using a growler and hacksaw blade D. isolating each coil from the others and using a megohmmeter

Last Answer : Answer: B

Aboard ship, a grounded field coil in an AC motor can be determined by using a _________________. A. portable growler B. galvanometer C. visual inspection D. megohmmeter

Description : Aboard ship, a grounded field coil in an AC motor can be determined by using a _________________. A. portable growler B. galvanometer C. visual inspection D. megohmmeter

Last Answer : Answer: D

With regard to nystagmus: a. caloric nystagmus occurs when iced water is poured into the ear b. vestibular nystagmus occurs as a consequence of head rotation c. optokinetic nystagmus occurs as a consequence of the relative motion of the visual field d. all above

Description : With regard to nystagmus: a. caloric nystagmus occurs when iced water is poured into the ear b. vestibular nystagmus occurs as a consequence of head rotation c. optokinetic nystagmus occurs as a consequence of the relative motion of the visual field d. all above

Last Answer : all above

In mammalian eye, the ‘fovea’ is the center of the visual field, where (a) only rods are present (b) more rods than cones are found (c) high density of cones occur, but has no rods (d) the optic nerve leaves the eye.

Description : In mammalian eye, the ‘fovea’ is the center of the visual field, where (a) only rods are present (b) more rods than cones are found (c) high density of cones occur, but has no rods (d) the optic nerve leaves the eye.

Last Answer : (c) high density of cones occur, but has no rods

What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting on the left c. Pinpoint 10° segments of the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Description : What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting ... the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Last Answer : c. Pinpoint 10° segments of the sky and confirm before passing onto another

What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting on the left c. Pinpoint 10° segments of the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Description : What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting ... the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Last Answer : c. Pinpoint 10° segments of the sky and confirm before passing onto another

What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting on the left c. Pinpoint 10° segments of the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Description : What visual technique should be used when searching for an aircraft? a. Sweep from side to side with the eyes covering the whole field of vision b. Search the sky portion by portion starting ... the sky and confirm before passing onto another d. Use a succession of small and rapid eye movements

Last Answer : c. Pinpoint 10° segments of the sky and confirm before passing onto another

The following are true about entopic phenomenon: a. it can be produced by cells in the vitreous b. it can be produced by palpation of the eyeballs c. the size of one's pupil can be observed with a pinhole d. asteroid hyalosis causes significant visual disturbance due to entopic phenomenon e. Haidinger's brushes are produced by the inner plexiform layers

Description : The following are true about entopic phenomenon: a. it can be produced by cells in the vitreous b. it can be produced by palpation of the eyeballs c. the size of one's ... significant visual disturbance due to entopic phenomenon e. Haidinger's brushes are produced by the inner plexiform layers

Last Answer : the size of one's pupil can be observed with a pinhole

Ethambutol is not used in children below 6 years of age because: A. Young children are intolerant to ethambutol B. Ethambutol causes growth retardation in young children C. It is difficult to detect ethambutol induced visual impairment in young children D. In young children visual toxicity of ethambutol is irreversible

Description : Ethambutol is not used in children below 6 years of age because: A. Young children are intolerant to ethambutol B. Ethambutol causes growth retardation in young children C. It is ... induced visual impairment in young children D. In young children visual toxicity of ethambutol is irreversible

Last Answer : C. It is difficult to detect ethambutol induced visual impairment in young children

What causes a branch to form in one spot instead of another on the trunk of a tree? (Or any plant for that matter)

Description : What causes a branch to form in one spot instead of another on the trunk of a tree? (Or any plant for that matter)

Last Answer : I think it’s whatever direction it’s get the most sunlight from. A plant needs light to make sugars, which help it to grow. damn I can’t remember what the process is called