VON GRAEFE TEST: The Von Graefe phoria test is a common clinical method to measure heterophoria (a latent eye turn) by using prisms to dissociate the eyes and have the patient align two separate images. HOW IT WORKS: Setup: The patient looks at a fixation target through a phoropter or trial frame at a specific distance (e.g., 6 meters for distance, 40 cm for near). Prism placement: A vertical prism (like a 12Δ base-up) is placed before one eye to vertically separate the images. A horizontal pris
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VON GRAEFE TEST: The Von Graefe phoria test is a common clinical m…
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Dr Antonyan explains migraines, dizziness, nausea, and vertical heterophoria 🤯 Even a small
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Dr Antonyan explains migraines, dizziness, nausea, and vertical het…
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Double vision where images look stacked on top of each other is NOT normal. That is classic vertical misalignment. Vertical heterophoria. When your eyes are slightly off vertically, your brain and eye muscles fight all day to keep the images fused into one. Most people don’t realize how much effort that takes… until they drink alcohol. Alcohol lowers your brain’s ability to compensate. The muscles can’t hold alignment as well. The misalignment breaks down. And suddenly the world looks vertically
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