Hyperopia: Symptoms And Causes
Many people suffer from ametropia such as farsightedness (hyperopia). Farsighted people usually see clearly in the distance, whereas near vision deteriorates continuously. In farsightedness, the normal proportion of the eyeball length and the refractive eye power is changed. As a result, the relaxed eye is not able to focus targeted objects on the retina, but only behind it. Headaches, sore eyes and rapid fatigue often occur. Would you like to see clearly in the distance again – without glasses and contact lenses? We offer various options for correcting farsightedness.
The Difference Between Normal Vision and Farsightedness
Normal Vision
Good vision requires a sharp image being produced on the retina at the back of the eye. The optical system (cornea, crystalline lens and vitreous body) of a normal eye diverts light rays in a way that they land exactly in focus at the point of best vision on the retina, the so-called makula. This diversion of light rays is called refraction. The total refractive power is expressed in diopters (D). Total refractive power is determined on the basis of the different parts of the optical system. When the total refraction is zero diopters, objects will be depicted sharply on the retina. The optical correction of farsightedness increases the refractive power of the optical system, moving the focal point forwards onto the retina.
With Hyperopia
The farsighted eye is usually too short. Another, rarer cause of farsightedness is that the refractive power of the cornea and lens is too weak. Farsightedness in a farsighted eye, the incoming light rays are refracted in a way that the focal point is located behind the retina. Distant objects may still be seen clearly, because the lens adjusts. However, near objects generally appear blurry. The optical correction is carried out by increasing the refractive power, so that the focal point is shifted forward onto the retina – in principle the same effect as is achieved with a converging lens.
Diagnosis and symptoms of Hyperopia
If hyperopia is suspected, the EuroEyes ophthalmologist will perform the following examinations:
- Objective refraction determination: Using a special device (refractometer), the doctor determines to what extent the refractive power of the eye deviates from the normal state.
- Subjective refraction determination: This examination is carried out with the help of measuring glasses and provides information about the actual visual acuity. The patient looks through lenses of different strengths and evaluates with which strength he can see best.
During the detailed preliminary examination, it is determined how severe the ametropia is and which procedure the patient is suitable for.
Farsightedness in Contrast to Presbyopia
A basic distinction is made between presbyopia and farsightedness (hyperopia). While presbyopia is an age-related visual disorder that most of the people get between 45 and 60 and is characterized by the progressive loss of natural flexibility and clarity of the lens. The congenital cause of farsightedness is almost always too short eyeball.
Treatment at EuroEyes
If you suffer from farsightedness and would like a treatment that permanently corrects your ametropia it is recommended the most modern laser eye surgery treatment method. Depending on the thickness of the cornea, eye laser treatment can be carried out for hyperopia up to +4 D. EuroEyes clinic group offers you professional treatment, a high level of technical expertise and many years of experience of its highly specialized eye surgeons in the field of eye laser treatment .The latest and most modern examination and treatment methods are used at EuroEyes.