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Antimetropia is a rare sub-type of anisometropia in which one eye is myopic (nearsighted) and the other eye is hyperopic (farsighted). This condition occurs in about 0.1% of the population. This condition occurs in about 0.1% of the population.
Aniseikonia can occur naturally or be induced by the correction of a refractive error, usually anisometropia (having significantly different refractive errors between each eye) or antimetropia (being myopic (nearsighted) in one eye and hyperopic (farsighted) in the other.)
Other terminology include anisometropia, when the two eyes have unequal refractive power, [18] and aniseikonia which is when the magnification power between the eyes differ. [19] Refractive errors are typically measured using three numbers: sphere, cylinder, and axis. [20] Sphere: This number denotes the strength of the lens needed to correct ...
During an eye examination, the presence of suppression and the size and location of the suppression scotoma may be the Worth 4 dot test (a subjective test that is considered to be the most precise suppression test), or with other subjective tests such as the Bagolini striated lens test, or with objective tests such as the 4 prism base out test.
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One and a half syndrome; Other names: On-and-a-half syndrome: Diagram of normal eye movement compared to left one-and-a-half syndrome (i.e. left lateral gaze palsy, with left Internuclear ophthalmoplegia (inability to adduct))
In young patients, mild hypermetropia may not produce any symptoms. [2] The signs and symptoms of far-sightedness include blurry vision, frontal or fronto temporal headaches, eye strain, tiredness of eyes, etc. [2] The common symptom is eye strain.
The two different types of near response are caused by different underlying disease processes. Adie's pupil is caused by damage to peripheral pathways to the pupil (parasympathetic neurons in the ciliary ganglion that cause pupillary constriction to bright light and with near vision).