Refractive error refers to the inability of the eye to focus the light rays on the retina resulting in a blurred image.
The 4 types of refractive errors are:
Myopia is also known as shortsightedness. People with myopia see better at near, while distant objects are blurred. This is the commonest form of refractive error among Singaporeans and Asians.
Hyperopia is also known as farsightedness. In people with hyperopia, distant objects are clearer while near objects appear blur.
Astigmatism occurs when the curvature of one part or the cornea is different from another part of the cornea. This results in light rays being focused at various points in the eye, resulting in blurring and distortion of the image.
This is a condition where the eye loses the ability to accommodate and focus at near objects. This occurs as part of the normal aging process which presents usually from the age of 40 onwards.
Correction of Refractive Errors
The methods for correcting refractive error include wearing spectacles, contact lenses or refractive surgery.
Refractive surgical procedures that can correct a person’s refractive error include LASIK surgery and Implantable contact lens surgery.