Long-sightedness (also known as hyperopia) is a common eye condition that can be hard to detect. It makes close objects appear blurry, or you might be able to focus clearly but get tired eyes or headaches. For people with significant long-sightedness, vision can be blurry for things in the distance as well. 15% of the French population suffers from hyperopia.
To see clearly, light rays must travel through the front of the eye (the cornea and lens). The cornea and lens work together to bend the light so it lands on the back layer of the eye, called the retina. The retina then sends a signal to your brain that allows you to see. Long-sightedness (hyperopia) affects your ability to focus on near objects. It is a refractive error caused by an imperfection in the eye.
It happens when:
When any of these imperfections occur, it changes the focusing point of the eye so that light rays focus behind your retina, instead of onto it. This makes close-up objects look blurry. Distance objects still appear clear because they don’t need as much focusing power, so they focus on your retina properly.
A hyperopic patient spontaneously uses his/her accommodative effort, crystalline lens’s converging power to overcome the circumstances. By birth most human beings are hyperopic, yet they do not experience blurry vision. With mild far-sightedness, most children see clearly near and far. As they get older, the eye grows and becomes longer, and mild far-sightedness is reduced or eliminated (then the eye may become emmetropic or even myopic). Long-sightedness/hyperopia is believed to be an inherited condition.
We can describe hyperopia according to its degree of severity:
There are three types of hyperopia:
Common signs of hyperopia include difficulty concentrating and maintaining a clear focus on near objects, eye strain, fatigue and/or headaches after close work, aching or burning eyes, and irritability or nervousness after sustained concentration.
Diagnosing long-sightedness (hyperopia) involves a comprehensive eye examination. The doctor or optometrist will use a standard vision test where they’ll ask you to read letters on a chart placed at the other end of the room. Other tests include: Slit lamp examination Refraction Visual field Visual acuity tests Examination of the retina
Long-sightedness is easily corrected with eyeglasses (with convex lenses) or contact lenses. They work by refocusing light on the retina in the back of your eye so that you can see clearly. If the patient is suitable and doesn’t want to wear glasses any more, refractive surgery is a great solution.
We can treat hyperopia as easily as myopia, regardless of your age, the severity of the hyperopia or any associated visual defect such as astigmatism and/or presbyopia. Laser eye surgery can treat hyperopia up to 10 diopters. For more severe hyperopia (over 8 diopters), implantable lenses are more suitable. We can also use implantable lenses to treat hyperopia of 1 to 10 diopters, depending on the condition of your natural lens.