Answer #1:
presbyopia
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Answer #2:
The clouding of the lens of the eye, either with age or in response to certain
external influences, is called 'cataract'.
"Presbyopia" is the progressive loss of the ability to focus on nearby objects.
A cataract is when the inside of the lens in the eye clouds over and become opaque. Nowadays, the clouded lens can be replaced by an artificial one.
The upper lens in a microscope is called the eyepiece or ocular lens. It is the lens through which the viewer looks to observe the magnified specimen on the microscope slide.
If you shine a parallel (ie unfocussed) beam of light perpendicular to a convex lens it will focus to a point on the other side. That place is called the focal point of the lens. Its distance to the lens is called the focal length.
A simple microscope.A magnifying glass
No, the eyepiece and objective lens are at opposite ends of the microscope.
It means clouded, like a clouded lens, you can barely see through.
the surgical removal of a cataract-clouded lens
A cataract is when the inside of the lens in the eye clouds over and become opaque. Nowadays, the clouded lens can be replaced by an artificial one.
Either your charging system is not working, or the lens is clouded, scratched, or discolored from the sun.
The clouded leopard has cloud shaped spots on its body. It is called the clouded leopard because of the cloud shaped spots. These leopards are the best climbers in the cat family.
The upper lens is called the ocular lens or the eyepiece.
The upper lens is called the ocular lens or the eyepiece.
Cataracts are where the lens of the eye becomes clouded and thus causes reduced vision. This most commonly affects elderly people. It can be treated with surgery where the lens is replaced by a synthetic lens. A cataract is also a waterfall or series of rapids in a river.
A cataract is where the lens of the eye has become opaque - essentially, the person is looking through a 'clouded' lens. That's why cataracts are cut away during surgery to improve vision on people who have gone blind because of them.
James H. Noyes has written: 'The clouded lens' -- subject(s): Foreign relations, Politics and government
when a beam of light is passed through the convex lens it converges the beam of ligth.hence convex lens is called a converging lens.
when a beam of light is passed through the convex lens it converges the beam of ligth.hence convex lens is called a converging lens.