There are three levels of hypermetropia:
- Weak – up to 2 diopters
- Middle – from 2 till 5 diopters
- High – more than 5 diopters
Weak levels of hypermetropia may be compensated by the accommodation strain, in other words, by increasing refracting power of the lens. In this case it is a question of hidden hypermetropia.
The treatment of hypermetropia lies in spectacles correction or in contact lens correction or in surgical correction.
In young age, till 35-40 years, farsightedness of weak level often does not reveal itself because the eye successfully compensates it (the so-called hidden farsightedness, about which a patient even does not suspect; it can be revealed only by a special ophthalmologic examination).
The age 35 – 40 is critical for a farsighted man because namely in these years the age farsightedness develops (presbyopia).
Presbyopia – by this term age changes in the eyes are named that affect all people usually over 40 years. In this age the human lens gradually becomes dense, the ciliary muscle becomes weaker, reserves of accommodation ability of the eye decrease. In the result of such age changes the man’s vision in the near deteriorates, it becomes more difficult to distinguish small near situated objects, there appear problems with reading, writing and so on. Farsighted people begin to experience difficulties connected with presbyopia earlier than others (see also Farsightedness (hypermetropia).