What Is the Difference Between Presbyopia and Hyperopia?
Generally speaking, myopia can accurately and clearly form an image in the macula of the eye retina when looking at objects five meters away. It is a normal eye. If the object is very blurry, like falling in front of your retina, and things become weak, this is the problem of focusing. Focusing in front of the retina is myopia. The feature of myopia is that as long as you move forward, the closer you are, the clearer you will be, and the farther you are, the less clear you will be. Therefore, myopia is called myopia.
Presbyopia is a physiological change. As the age increases, the sclerotic adjustment function of the lens gradually weakens. In small part, it is difficult to see because of the decline of the ciliary muscle. The age at which presbyopia occurs is not consistent, which is related to my refractive state and the nature of each person's work. Generally, emmetropic people before the age of 40 do not need to wear spectacles. Hypermetropic people are farther from their proximal points than emmetropic people, but there is no difference in the weakening of their accommodation.
The glasses for correcting myopia are concave lenses. The image formed by the concave lens is always smaller than the vertical virtual image of the object. The concave lens is mainly used to correct myopia. Presbyopia glasses are just the opposite of convex lenses.
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