Hypermetropia is an eye problem that causes blurry vision when focusing on nearby places and objects, but clear vision is there when focusing at a greater distance. The condition is caused by an eye that is shorter than normal, or a cornea that's not as curved as it should be.
Eyes that are little misshapen won't be able to focus light accurately onto the retina, which results in blurred vision. There are several kinds of irregular shapes than an eye can take, each moving the focal point of the light away from the retina, resulting in a different form of vision impairment.
When the shape of an eye aims light in front of the retina, the resulting condition is called myopia, or nearsightedness. A focal point behind the retina is called hyperopia.
Corrective lenses are available for both conditions, and are designed to move the focal point to the surface of the retina, restoring clear and focused eyesight.
The causes of hypermetropia
Somehow hypermetropia is hereditary, but can develop in anyone. It is possible to experience symptoms even during childhood, but is much more common later in life.
In fact, anyone above the age of 40 has a much greater chance of having symptoms of hyperopia, with the likelihood growing every year.
Aging does not necessarily cause the eyes to change shape any more, but it does diminish the eyes ability to flex enough to accommodate for the refractive error. Additionally, some forms of hyperopia can be caused by injury, drugs, or disease.
It's common for farsightedness to be confused with presbyopia. Both of the conditions have similar results - difficulty focussing on objects that are near - but they have different causes.
What are the Symptoms of Hypermetropia?
Everything may seem clear and in focus when viewing at a distance more than a few meters away, but any closer than that and things may start to get blurry. The closer they get, the less focused they become.
As it becomes more difficult to read and write, squinting will cause eye strain and fatigue, leading to headaches.
How is Hypermetropia Detected and Treated?
Farsightedness is not usually diagnosed in basic eye-screenings because those tests only measure the ability to see objects in the distance.
If an individual is found to be farsighted, a more comprehensive optometrist examination should be carried out to diagnose the condition.
Corrective eyeglasses, contact lenses, and even surgery can all help to restore clear and focused eyesight.
Each has their own advantages and disadvantages, though, and lifestyle, work environment, and personal preference all play a role in deciding which is best. You should discuss with your eye care professional which one is right for you.
- Eyeglasses are inexpensive and effective, but not always convenient. If you have an active lifestyle, or play sports, it may be difficult to keep them firmly in place. They come in many different shapes and sizes, and can be quite fashionable. Tinted lenses are also available, allowing you to stay protected from bright sunlight and damaging UV rays.
- Contact Lenses are much more subtle, providing no change in your personal appearance at all. They're designed to be worn all day long, and removed at night. Several types of lenses can be worn for varying lengths of time. With proper hygiene and some practice, contact lenses are one of the more versatile options for people looking for corrective eye wear.
- Surgery is also an option - LASIK and PRK are the two examples of surgical methods that reshape the surface of the eye, allowing it to refract light accurately without any need for corrective lenses. This is a more expensive method of fixing the problem, but it's also more permanent. The recovery time is usually only a few days, but only one eye is corrected at a time, so multiple visits will be required.
For mild cases of hypermetropia, you may only need to wear your corrective lenses when doing tasks at close range - such as reading or using a computer.
Those who have more severe hypermetropia, or who suffer from other conditions like astigmatism, may need to wear their lenses more often.