What Is Anisometropia?

Anisometropia is a condition where one eye has a different refractive power than the other eye. It’s one of the most common causes of amblyopia, also referred to as “lazy eyes.” A+ Vision Optometry, your provider of vision therapy and other quality eye care services, talks about this eyesight problem in detail.

How It Happens

While the exact cause of anisometropia remains unknown, having eyes that are of different sizes or shapes may contribute to its development. The asymmetric eyeball curvatures lead to varying refractive powers and focusing abilities. Consequently, your eyes may send two dissimilar images to your brain, causing confusion. To compensate, your brain may ignore signals coming from the weaker eye, which may result in another vision problem known as amblyopia or “lazy eyes.”

Common Types and Symptoms

Your eye doctors explain that anisometropia has three major classifications. The simple type happens when only one eye has a refractive error. The compound form, on the other hand, occurs when both eyes are either near- or farsighted, but at different degrees. Your right and left eyes may be both nearsighted. However, the right one may need a higher lens prescription. Lastly, the mixed sort develops when one eye is hyperopic (farsighted), while the other one is myopic (nearsighted).

Having unequal vision measurements, you’re likely to have binocular eyesight problems. You may see double at times. Some also develop astigmatism and heightened light sensitivity. You may experience headaches, dizziness and eye strain frequently, as well. Amblyopia is another common complication. This refers to a condition where your eyes fail to achieve normal visual acuity, even when you’re using prescription eyeglasses or contact lenses.

Our Recommended Management

Using corrective eyewear is the first step to correcting anisometropia. That said, each lens may have different lens prescription as appropriate to the eye’s refractive error. Many eye care specialists recommend contact lenses as they do not magnify the size difference seen by each eye. As they are directly placed on the eyes, they also reduce the prismatic effect that happens when you’re wearing glasses. We may consider vision therapy if using prescription eyewear seems ineffective.

For more information about anisometropia, call us at (949) 377-1312 or complete our form. We serve Rancho Mission Viejo, Rancho Santa Margarita, and nearby CA areas.

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