Hyperopia ( = hypermetropia or farsightedness) is a condition of the eye characterized by a difficulty seeing objects that are close. It is the opposite to myopia (nearsightedness)
It is a common condition in young children whose eyes have not grown enough. Hyperopia is the leading cause of most strabismic visions in infants or very young people because of the efforts their eyes make to converge images towards the same point of the retina. This same effort is the reason why the affected eyes become tired or irritated after reading. In most cases hypermetropia resolves as people get older.
It is important for everyone involved in the process of physical and intellectual development of children (Parents, teachers, monitors, etc.) to watch for possible symptoms of farsightedness. This will permit to take the due corrections as soon as possible. Equally important is for children to wear corrective lenses, so adults have to do their best in order they can be well accepted.
Similarly, this condition can cause psychological disorders in older people who do not accept the use of corrective glasses or consider them unattractive.
Hyperopia requires to be monitored , since it may be a cause of glaucoma, especially when, having been diagnosed, there is a sudden worsening of symptoms.
Symptoms of hypermetropia
The main symptoms of hypermetropia are: Difficulty seeing close objects, double vision, irritation or tiredness after eyestrain, , headaches, ability to focus the view on a nearby object but with the corresponding eyestrain (Asthenopia). Poor vision in one eye ( Lazy eye or amblyopia). Eye squinting ( Strabismus). Binocular problems. etc.
Causes of hypermetropia
Hypermetropia is caused mainly by the inability of the hyperopic eye to focus light rays onto the retina. The light rays rather than being reflected on the retina, are reflected behind it, causing blurring vision of nearby objects.
This inability to focus on the retina can occur because of two distinct causes:
- The eyeball is too shallow so the lens is unable to accommodate ( to focus) the beam of light onto the retina.
- The curvature of the lens is insufficient to achieve the right approach.
Diagnoses and treatment of hypermetropia
Any eye problem first requires a previous visit to a specialist who will provide you a diagnosis about it.
Most cases of hypermetropia in infants resolves spontaneously with growth. In severe cases or in older people the solution is the use of glasses or contact lenses (corrective convergent lenses ) to get proper focus on nearby objects by means of addressing the light to the correct point of the retina.
The patient may also opt for laser surgery (LASIK) to correct the shape of the cornea and achieve an appropriate approach. This allows a proper vision without glasses or contact lenses. This type of operation can be performed only in people whose eyes have acquired the final size.
- The natural treatment of hypermetropia is based of a series of remedies that can help delay the onset of this disorder or to improve its evolution.