Understanding Anisometropia and aniseikonia: Causes, Symptoms, and Management

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Anisometropia and aniseikonia

by Alike Medical Team ∙ Updated on June 13, 2023

General

Anisometropia is a condition in which the refractive power is unequal in both eyes. In anisometropia, one eye can be farsighted and the other one nearsighted. Differences could be either mild or extreme, and dramatically affect the vision. Aniseikonia is a condition in which the figure of the object seen by one eye is different in size or shape from what is seen by the other eye. If left untreated, the brain chooses the stronger eye, which will become the dominant eye.

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Signs & symptoms

Anisometropia and aniseikonia symptoms may include blurred vision, difficulty reading, light sensitivity, dizziness, double vision, nausea, fatigue, headaches, impaired depth vision and eyestrain.

Diagnosis

Anisometropia and aniseikonia are diagnosed in an eye exam which includes usage of various instruments by the end of which prescription of eyeglasses or contact lenses are indicated.

Treatment

Anisometropia and aniseikonia is treated with corrective lenses, either eyeglasses or contact lenses. However, if there is an extreme difference it can cause a problem with double vision occurring. Refractive surgery may reduce the need for contact lenses or eyeglasses.There are several techniques used for refractive surgery, the most popular are laser-assisted in-situ keratomileusis (LASIK), Laser-assisted subepithelial keratectomy (LASEK), Photorefractive keratectomy (PRK)

Note

☝ We provide information on prescription and over-the-counter medicines, diagnosis, procedures and lab tests. This material is provided for educational purposes only and is not medical advice, diagnosis or treatment.

National Institutes of Health ∙ World Health Organization ∙ MedlinePluse ∙ Centers for Disease Control and Prevention

☝ All information has been reviewed by certified physicians from Alike

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