Refractive error is a problem with the focusing of light on the retina, while heterophoria is a hidden deviation in the position of the eyes that only becomes apparent when image fusion is disrupted (e.g., when one eye is covered). Although these two causalities may seem unrelated, they may nevertheless influence each other. For example, a strong refractive error may require more effort to focus, which may be associated with greater strain on the eye muscles and potentially worsen the symptoms of heterophoria. Correction of the refractive error can not only improve overall visual acuity, but also alleviate symptoms, such as eye fatigue, resulting from the presence of heterophoria (Wajuihian SO, 2018).

Sustainable Development Goals

Masaryk University is committed to the UN Sustainable Development Goals, which aim to improve the conditions and quality of life on our planet by 2030.