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Augenerkrankungen - Lexikon der Augenmedizin - wichtige Begriffe

Refractive errors

A refractive error (ametropia) is the imbalance between the optical ability of the eye to focus light and the anatomical length dimensions. This is not normally due to disease, but is caused by natural standard variants. Refractive errors can be compensated completely by wearing corresponding glasses. A distinction is made between different types of refractive error. ... read more
Myopia
Short-sighted people are able to see close objects in sharp focus, whereas objects further away can be seen only blurred. In the case of myopia, ... read more
 
Hyperopia
Long-sighted people see distant objects in sharp focus while close objects are blurred. In the case of hyperopia, the eyeball is usually too short. Here, the lens focuses the light rays ... read more
 
Astigmatism
People with astigmatism experience distorted vision of both close and distant objects. A punctiform object in nature is perceived as a line on the retina. One reason for this ...read more
 
Presbyopia

Presbyopia is caused by the natural aging process of the lens. As people grow older, the elasticity of the lens decreases and it therefore loses its ability to adapt to different distances. This is known as      ...read more
 
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