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How do images formed by a concave lens and convex mirror compare?
Both give diminished, virtual, erect image. Hence convex mirror is used as rear view glass in case of vehicles near by the drivers. Concave lens is used to correct short sightedness.
Should a short sighted person use a concave or convex lens?
This is a lens which is designed to help someone who has problems seeing at distance (myope), the light rays going into your eye are not hitting the fovea (the part of the eye located on the retina which allow you to see clearly) in the proper place, these rays are falling in front of the fovea, so by using a concave ( a minus lens) lens, this moves these light rays by diverging them and moving them back to the fovea which allows for clear vision at distance. At least this is how a concave lens is used optically speaking.this is from winter006: concave mirrors are used in stores and gas stations to see a wider area of the store.It's also called , a Diverging Lens .It is thinnest in the centre and spreads light out , so it gives a diminished image .
When a person is far sided do the need a concave lens or convex lens?
Farsighted people use convex lenses to correct their vision.(This is the correct answer!)
What lenses would you use for short sightedness and long sightedness?
far short sight you can use concave lenses far long sight you can use convex
How the lens change it shape when foucsing on near objects?
the lens of our eyes is different to the lens of a magnifying glass-it can change its shape from thick to thin
How do images formed by a concave lens and convex mirror compare?
Both give diminished, virtual, erect image. Hence convex mirror is used as rear view glass in case of vehicles near by the drivers. Concave lens is used to correct short sightedness.
What does wavefront surgery correct?
The wavefront surgery corrects eye vision. It is used to correct refractive errors near sightedness, far sightedness and astigmatism. It is used to give people better eye sight.
What is near-sightedness?
myopia or "near-sightedness" as most of us refer to it is an eye condition.
How expensive is laser vision correction for being near sighted?
Laser surgery to correct near sightedness is fairly expensive. You could pay 2,100-2,500 dollars per eye.
What are other visual problems?
There are a lot of visual problems like, glaucoma.cataract,nystagmus,strabismus,retinal detachment, far sightedness and near sightedness.
What causes short sight and how it can be fixed?
Myopia, or near-sightedness, is caused because the eyeball is too long in relation to the focusing power of the lens onto the retina. This causes the image to be focused at a point in front of the retina rather than on top of it. There are two ways to correct this: corrective lenses (eyeglasses or contact lenses) or surgery.
Why do some people have to wear eyewear?
Some people have to wear eyewear in order to correct defects in their vision such as near sightedness and far sightedness. Other people may wear eyewear in order to prevent headaches and migraines. Some people wear eyewear without lenses to look cool.
How is near and far sightedness be corrected?
Nearsightedness is normally treated with prescription eyewear.
Should a short sighted person use a concave or convex lens?
This is a lens which is designed to help someone who has problems seeing at distance (myope), the light rays going into your eye are not hitting the fovea (the part of the eye located on the retina which allow you to see clearly) in the proper place, these rays are falling in front of the fovea, so by using a concave ( a minus lens) lens, this moves these light rays by diverging them and moving them back to the fovea which allows for clear vision at distance. At least this is how a concave lens is used optically speaking.this is from winter006: concave mirrors are used in stores and gas stations to see a wider area of the store.It's also called , a Diverging Lens .It is thinnest in the centre and spreads light out , so it gives a diminished image .
When the image of a distant object is brought into focus in front a a persons retina the defect is called?
The image of a distant object is brought into focus in front of a person's retina, the defect is called nearsightedness. A virtual image produced by a lens is always located in front of the lens.
What determines if you are near sighted or farsighted is coolness?
This question makes no sense. It is the shape of specifric parts of the eyes that determines far or near sightedness.
Where can get laser eye surgery procedures in Akron?
One can get laser eye surgery procedures in Akron from Clear Choice. This is a center that deals with eye surgery to give clearer vision. With laser eye surgery, one does not need to have contact lenses or eye glasses. This type of eye surgery is used to correct problems that has to do with far-sightedness or near-sightedness.
