How to Prescribe Vertical and Horizontal Prism

I saw a patient who went the local ophthalmologist’s office for eyeglasses. Unfortunately, they were remade a few times, but were never right with complaints of double vision. This prescription was complex, which took extra time, care, and attention that we were able to provide. This patient is “very happy” with our glasses!

3 keys to success: 1. trial frame refraction 2. careful mathematical equations, as described in these articles: how to prescribe prism and prismatic effect and binocular vision 3. careful measurements: using a combination of traditional and automated methods!

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