What causes vertical heterophoria?

Some people have a longstanding tendency that becomes symptomatic under higher visual demand, prescription changes, switching lens designs, or periods of sustained near work.

How is vertical heterophoria diagnosed?

Diagnosis requires binocular vision testing that looks beyond clarity and checks how the eyes work together, including assessing alignment, fusion demand, symptom pattern, and prism stability.

Can glasses help with vertical heterophoria?

Yes, prism glasses can help by aligning the image more comfortably for the visual system, reducing compensatory effort.

What Is Vertical Heterophoria in Adults?

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