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In nearsightedness, the eyeball is elongated and the focal point thus falls short of the retina. This results in good vision for objects very close to the face, but poor vision at any significant distance (even beyond a few feet, for any level of nearsightedness.
Conversely, in farsightedness, the focal point is never reached, before the retina. Thus, objects which are near cannot be seen clearly. However, distance sight is preserved.
What else can I help you with?
What do the terms farsightedness and nearsightedness mean?
Farsightedness is when your vision is good at seeing distances, but needs correction to see clearly the things that are close to you. Nearsightedness is when your vision is good at seeing things that are close to you, but needs correction to see clearly the things that are further away.
How does nearsightedness and far sightedness differs in terms of defects and corrective lenses used?
Ewan .. Di ko rin alam eh
How do you compare ratios-?
To compare ratios, compare the products of the outer terms by the inner terms.
How do the paintings compare in terms of their subject matter?
how do the paintings compare in terms of their subject matter
What is compare in math terms?
To "compare" usually means to find out which of two numbers is bigger, if any.
Can you have a negative OD and a positive OS?
Yes, it is possible to have a negative optical density (OD) in one eye (OD) and a positive optical density in the other eye (OS) when measuring certain parameters, such as in the context of vision correction or disease assessment. This can occur in cases of asymmetrical refractive errors or differing conditions affecting each eye. The terms "negative" and "positive" in this context typically refer to the refractive power of lenses needed for correction, where negative indicates myopia (nearsightedness) and positive indicates hyperopia (farsightedness).
Compare primary and secondary succession by giving examples of each?
Compare means define so define both of the terms.
Where can one find a site to compare bank loans?
Compare the market is a good site to compare bank loans. They let you compare various type loans and maturities, and terms. The results come back quickly.
Can you explain the difference between myopia and hyperopia in terms of how they affect vision?
Myopia, also known as nearsightedness, is a condition where a person can see nearby objects clearly but distant objects appear blurry. Hyperopia, also known as farsightedness, is the opposite, where distant objects are seen clearly but close-up objects may appear blurry. Both conditions are caused by the way light is focused in the eye, with myopia being due to the focal point falling in front of the retina and hyperopia being due to the focal point falling behind the retina.
What is the definition of farsighted and nearsighted?
Hyperopia, also known as farsightedness, longsightedness or hypermetropia, is a defect of vision caused by an imperfection in the eye (often when the eyeball is too short or when the lens cannot become round enough), causing inability to focus on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance. As an object moves toward the eye, the eye must increase its power to keep the image in focus on the retina. If the power of the cornea and lens is insufficient, as in hyperopia, the image will appear blurred. Myopia also called near- or short-sightedness, is a refractive defect of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed. Those with myopia see nearby objects clearly but distant objects appear blurred. With myopia, the eyeball is too long, or the cornea is too steep, so images are focused in the vitreous inside the eye rather than on the retina at the back of the eye. The opposite defect of myopia is hyperopia or "farsightedness" or "long-sightedness" - this is where the cornea is too flat or the eye is too short. But someone can be both far-sighted and near-sighted.
Where can someone compare mortgages to let?
A great website to compare mortgages to let is compare the market dot com. It has a compare table to see all the different options available to you. It combines different companies that sell mortgages and lets you compare there rates, terms, etc.
What does a 44cal blackpowder compare to in modern firearms?
In terms of muzzle velocity it compares to a 45 ACP 700 feet per second area, in terms of foot pounds or knock down power compare it to the colt 38 short.
