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Anisometropia
 
 
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Anisometropia (Pronunciation: a-?ni-s?-m?-'tro-pe-?) is the condition in which the two eye
Eye

Eyes are Organ that detect light, and send signals along the optic nerve to the visual system and other areas of the brain. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system....
s have unequal refractive power; that is, are in different states of myopia
Myopia

Myopia , also called near- or short-sightedness, is a Refractive error of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed....
 (nearsightedness), hyperopia
Hyperopia

Hyperopia, also known as far-sightedness, long-sightedness or hypermetropia, is a defect of visual system caused by an imperfection in the eye , causing inability to Focus on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance....
 (farsightedness) or in the extreme, antimetropia (wherein one eye is myopic and the other is hyperopic), the unequal refractive states cause unequal rotations thus leading to diplopia
Diplopia

Diplopia, commonly known as double vision, is the simultaneous perception of two images of a single object. These images may be displaced horizontally, vertically, or diagonally in relation to each other....
 and asthenopia
Asthenopia

Asthenopia or eye strain is an ophthalmology condition that manifests itself through nonspecific symptoms such as fatigue, red eyes, eye strain, pain in or around the eyes, blurred vision, headache and occasional diplopia....
.

Anisometropia can adversely affect the development of binocular vision
Binocular vision

Binocular vision is Visual perception in which both eyes are used together. The word binocular comes from two Latin roots, bini for double, and oculus for eye....
 in infants and children if there is a large difference in clarity between the two eyes.






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Anisometropia (Pronunciation: a-?ni-s?-m?-'tro-pe-?) is the condition in which the two eye
Eye

Eyes are Organ that detect light, and send signals along the optic nerve to the visual system and other areas of the brain. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system....
s have unequal refractive power; that is, are in different states of myopia
Myopia

Myopia , also called near- or short-sightedness, is a Refractive error of the eye in which collimated light produces image focus in front of the retina when accommodation is relaxed....
 (nearsightedness), hyperopia
Hyperopia

Hyperopia, also known as far-sightedness, long-sightedness or hypermetropia, is a defect of visual system caused by an imperfection in the eye , causing inability to Focus on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance....
 (farsightedness) or in the extreme, antimetropia (wherein one eye is myopic and the other is hyperopic), the unequal refractive states cause unequal rotations thus leading to diplopia
Diplopia

Diplopia, commonly known as double vision, is the simultaneous perception of two images of a single object. These images may be displaced horizontally, vertically, or diagonally in relation to each other....
 and asthenopia
Asthenopia

Asthenopia or eye strain is an ophthalmology condition that manifests itself through nonspecific symptoms such as fatigue, red eyes, eye strain, pain in or around the eyes, blurred vision, headache and occasional diplopia....
.

Anisometropia can adversely affect the development of binocular vision
Binocular vision

Binocular vision is Visual perception in which both eyes are used together. The word binocular comes from two Latin roots, bini for double, and oculus for eye....
 in infants and children if there is a large difference in clarity between the two eyes. The brain will often suppress the vision of the blurrier eye in a condition called amblyopia
Amblyopia

Amblyopia, otherwise known as lazy eye, is a Disease of the visual system that is characterized by poor or indistinct Visual perception in an eye that is otherwise physically normal, or out of proportion to associated structural abnormalities....
, or lazy eye.

The name is from four Greek
Greek language

Greek is an Indo-European languages native to the southern Balkan peninsula, the language of the Greek people. It forms an independent branch within Indo-European....
 components: an- "not," iso- "same," metr- "measure," ops "eye."

One study estimated that 6% of those between the ages of 6 and 18 have anisometropia.

Spectacle correction

For those with large degrees of anisometropia, spectacle correction may cause the person to experience a difference in image magnification between the two eyes which could also prevent the development of good binocular vision.