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Do people who wear eyeglasses have poor seeing quality?
Often they do. Most often they either have one of two conditions: they have trouble seeing far away objects clearly or they have trouble seeing close up objects clearly. ...
Asked in Health
Corrective lenses that have two different refractive powers that are located one on top of the other are known as?
Corrective lenses with two different refractive powers located one on top of the other are known as bifocals. Bifocals allow a person with both myopia (nearsightedness) and hyperopia (farsightedness) to see objects both near and far away (a person with nearsightedness CAN see objects nearby, but has a hard time seeing objects far away). ...
Asked in Astronomy, Technology, Telescopes
What is the importance of telescope?
a telescope is used for seeing far away objects like the stars and its importance are A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such asvisible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s (the 17th century), using glass lenses. They found use in terrestrial applications and astronomy. ...
Asked in Physics
Why do convex lenses have shorter focal lengths than thin convex lenses?
The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant. ...
How do you tell if a camera is a DSLR?
The easiest way to determine whether a camera is DSLR (or SLR) or not is by seeing if the lenses are detachable. If you can switch between different camera lenses, the camera is definitely either a DSLR or a SLR....
Asked in Glasses and Eyewear
Why does a person need eyeglasses?
It is required when a person started having symptoms like having blurry, faces difficulty in driving, can't focus, seeing double, closing one eye while reading, eye strain, headaches etc. To avoid all these problems eyeglasses are needed. ...
Asked in Contact Lenses
Can you reuse contact lens?
You can if you're using Extended contact lenses, these you can use for up to a month I believe as long as you clean them. You could reuse Daily contact lenses, but it's not recommended seeing as they are usually thrown away after their purpose has been served. ...
Asked in Science
Instrument that makes small distant objects visible?
An instrument that makes small, distant objects visible is a telescope. Binoculars and scopes are also used for seeing long distance. ...
Asked in Magic: The Gathering, Health
Is there such a thing as moving objects with your eyes?
It called Telekinesis, and you move the objects with your mind, not your eyes. No one has yet proven to actually be telekinetic. The only Telekinesis you are going to be seeing for a while is in movies. ...
Asked in Harry Potter
How does something get petrified?
A person or animal can get petrified by seeing a basilisks eyes through water, mirrors or camera lenses: pretty much seeing them without staring directly into them. a ghost can get petrified by staring directly into the eyes, but because they are dead they cant die again. ...
Asked in Science, Astronomy, Telescopes
How does collecting area affect the ability to see faint objects?
More collecting area means that more light is collected. This allows seeing fainter objects - objects that emit less light, from which we receive less light per unit area. ...
Asked in Eyes
What type of lens is used to correct farsighted vision?
Convex lenses are thicker in the middle then the edges and concave are thicker at the edges then the middle. When light travels through lenses, refraction occurs. The light bends either outward or inward, it depends on the lens. The lens of your eye is a double convex lens. Its job is to focus the image on the retina of the eye. If one is farsighted, the lens in the eye causes the focus to be behind the retina. These people see...
Asked in Vision Disorders
Was nearsighted now farsighted how does this happen?
This is an extremely common problem across the globe. Being nearsightedness, or myopic, affects billions of people and the prevalence of myopia is nearly epidemic in areas of Asia. However, there can come a time in one's life where they are BOTH nearsighted yet have difficulties with near vision as well and will need different corrective lenses to treat both conditions. Being myopic occurs when light does not focus directly onto the specialized neural tissue at the back of the eye called...