Lazy Eye (Amblyopia)
Amblyopia (“lazy eye”) is a condition in which one eye has a lower visual capacity than the other—or both eyes have vision below normal limits—even though there is no structural abnormality in the eye itself or in the optic nerve. Vision is a sense that is learned from birth. As the brain develops, vision also develops and we learn to see in greater detail. If, during this critical developmental period, something interferes with visual input—for example, one eye has a significantly higher refractive error than the other—vision may be learned more blurred on that side, and that eye may become “lazy” (amblyopic).
What Are the Causes of Amblyopia (Lazy Eye)?
If amblyopia is not treated, it may lead to a rapid decrease in visual acuity, loss of binocular (two-eye) vision, and difficulty with depth perception. Because it develops during the growth period, it is often difficult for the person to recognize it on their own. Strabismus (eye misalignment), referred to medically as strabismus, is one of the most common causes of amblyopia.
Refractive errors
If refractive errors such as myopia, hyperopia, or astigmatism are much higher in one eye compared to the other, this can lead to amblyopia.
Strabismus
Strabismus is the loss of parallel alignment between the eyes. Each eye has six extraocular muscles. Weakness or overactivity in one or more of these muscles may cause strabismus. While one eye looks straight ahead, the other may deviate inward, outward, upward, or downward. In some cases, both eyes may deviate. Depending on the cause, misalignment may be constant or intermittent. There is not a single cause of strabismus; it can develop for different reasons. Early diagnosis is very important in strabismus treatment.
Other eye diseases
Corneal opacity/scar
Drooping eyelid (ptosis) covering the pupil
Cataract
Cataract can be congenital and may significantly accelerate the development of amblyopia. When cataract is present from birth, it can cause amblyopia very early and should be treated as soon as possible.
Last Updated: 30.01.2023
Prepared by the Dünyagöz Hospital Editorial Board.
*This content is for informational purposes only. Please consult your physician for diagnosis and treatment.
What Are the Causes of Amblyopia (Lazy Eye)?
If amblyopia is not treated, it may lead to a rapid decrease in visual acuity, loss of binocular (two-eye) vision, and difficulty with depth perception. Because it develops during the growth period, it is often difficult for the person to recognize it on their own. Strabismus (eye misalignment), referred to medically as strabismus, is one of the most common causes of amblyopia.
Refractive errors
If refractive errors such as myopia, hyperopia, or astigmatism are much higher in one eye compared to the other, this can lead to amblyopia.
Strabismus
Strabismus is the loss of parallel alignment between the eyes. Each eye has six extraocular muscles. Weakness or overactivity in one or more of these muscles may cause strabismus. While one eye looks straight ahead, the other may deviate inward, outward, upward, or downward. In some cases, both eyes may deviate. Depending on the cause, misalignment may be constant or intermittent. There is not a single cause of strabismus; it can develop for different reasons. Early diagnosis is very important in strabismus treatment.
Other eye diseases
Corneal opacity/scar
Drooping eyelid (ptosis) covering the pupil
Cataract
Cataract can be congenital and may significantly accelerate the development of amblyopia. When cataract is present from birth, it can cause amblyopia very early and should be treated as soon as possible.
Last Updated: 30.01.2023
Prepared by the Dünyagöz Hospital Editorial Board.
*This content is for informational purposes only. Please consult your physician for diagnosis and treatment.
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