The eye has several parts, of which, retina, cornea, and lens are of prime importance that helps in vision. The eye resembles a camera in function. Just as the lens of a camera focuses light on a film to generate an image, the cornea and lens focus light on the retina to produce an image. This is how we visualise things around us. What happens if there is a problem in the evenness of the cornea or lens? It leads to the improper focusing of light; the light falls behind the retina, instead of falling on it. This error is called farsightedness.
Farsightedness, also called as hyperopia is a vision problem; wherein you can see distant objects clearly, but those appear nearby may be blurred. Tasks like reading a newspaper or sewing may be difficult to perform. You can correct this condition by using farsighted contact lenses or eyeglasses, or even surgery.
Farsightedness mainly occurs when your cornea is curved too little or if your eye is shorter than the normal. Instead of light focusing on the retina, it focuses behind the retina resulting in the blurry appearance of close-up objects.
Other causes if farsightedness include:
Many children are born with farsightedness. Moreover, farsightedness tends to be hereditary.
Though it begins in childhood, with normal growth and development of the child, the problem is rectified. But, after the cessation of development of the eye, if the child is still farsighted, he or she may be given glasses or contact lenses to wear.
You can’t prevent farsightedness, but you can protect your eyes and vision by following these tips:
Your doctor performs a complete eye examination that includes series of tests along with a slit-lamp test to check if you have farsightedness.
Things to do before seeing an eye specialist
Generally, farsightedness does not require treatment, especially if you are young because the lenses are so flexible that they can adjust accordingly. As the person ages, the flexibility is lost. So, one need wearing corrective lenses such as eye glasses and contact lenses.
Surgery for farsightedness may be required in some cases, which works by correcting the curvature of the cornea, thereby improving refractivity of the light.
Examples of surgeries are: