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What else can I help you with?
Why are convex lens useful?
convex lenses are for short sighted people.
How do you use concave lens in a sentence?
A concave lens is thinner at the centre. People who are short sighted often use a concave lens to help them see better.
How do glasses help short sighted people?
Short sighted people are not helped by lenses or anything else. Except the consequences of their short sightedness. I think you mean near sighted people. The eye is a lens and focal point system. The focal length of the eye can be manipulated by flexing muscles in the eye socket to change the distance between the lens and the back of the eyeball. A near sighted, or even a far sighted, person has an eyeball that is too long or too short for the lens, and therefore the image produced by the eye's lens is focused either in front of or behind the back of the eye. A lens, either in a pair of glasses or a contact lens, can assist the eye by effectively pre-focusing the image that enters the lens of the eye to a sharpness that can be accommodated by the focal length of the malformed eyeball, focusing the image sharply on the back of the eyeball. - wjs1632 -
What type of lens used to correct short sighted?
Short Contact Lencesnear sight is hyopia
What is the property of image formed by concave lens?
Image formed by a concave lens or a diverging lens is virtual,upright and smaller than the object.It is used by short sighted people.
Which explains why a short eyeball is the cause of farsightedness?
Short sightedness (or myopia) occurs when the eye focusses the image in front of the retina. A minus powered lens is used to bring the image forward and so into focus.It is easily correctable with glasses, contact lenses or laser surgery.
When light rays enter the eyes of fair sighted people they fall short of the retina?
When a person is near or far sighted, the focal point of the light entering the eye does fall either short of or behind the retina. This is due to improper alignment ot the lens at the front of the eye. Corrective lenses correct this by changing the focal length of the light within the eye.
How does a convex lens fix eye problems?
A convex or converging lens can fix eyes with long sighted vision. A person who is long sighted cannot focus on near objects which can be corrected by wearing a convex lens.ÊÊ
When a person is far sided do the need a concave lens or convex lens?
A person who is farsighted needs a converging lens, which is a convex lens, to help focus light properly onto the retina. This type of lens helps to converge incoming light rays so that distant objects can be seen more clearly.
What are two uses for a convex lens?
Concave lenses are used in glasses for people who are near-sighted. Convex lenses are used in glasses for people who are far-sighted.
Does the least distance of distinct vision increase or decrease for long sighted eye?
A long-sighted eye has a lens of insufficient power so that it needs an extra convex (magnifying) lens to bring objects into focus. A more powerful lens allows objects to be focussed at a closer distance, and that is what a magnifying glass does.
What is the term that describes an eye in which the natural lens has been replaced with an intraocular lens?
The term for an eye in which the natural lens has been replaced with an intraocular lens is "pseudophakic eye."
