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| Refraction Errors & Correction |
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REFRACTION ERRORS & CORRECTION |
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Slight alterations in vision should never be neglected. It’s very important to get yourself checked by trained optometrists and specialist and get your eyes evaluated. Uncorrected refractive errors can lead to impaired development of vision in children leading to amblyopia or lazy vision and squinting of eyes |
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Refractive errors in the eye are of 3 types |
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Myopia or short sightedness
Refers to a state of the eye, herein the rays of light coming
from a distant target, get ocused at a point in front of the retina.
In this situation, minus powered glasses or contact lenses are
necessary to focus this image onto the retina |
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Hyperopia or long sightedness
Refers to a state of the eye, wherein the rays of light coming
from a distant target, get focused at a point behind the retina.
In this situation, plus powered glasses or contact lenses are
necessary to focus this image onto the retina
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Astigmatism or cylindrical power
Refers to a state of the eye, wherein the rays of light coming
from a distant target, cannot focus at a single point on the retina.
In this situation special lenses of different curvature are required
to focus the light onto the retina
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