Difference between revisions of Vertex distance
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The vertex distance is the distance between the surface of your eye and the center back of your lens. As the lens moves further from the eye, it needs to be stronger to have the same effect. This is particularly important to know about when switching between contacts and eye glasses, and for very high myopes. | The vertex distance is the distance between the surface of your eye and the center back of your lens. As the lens moves further from the eye, it needs to be stronger to have the same effect. This is particularly important to know about when switching between contacts and eye glasses, and for very high myopes. | ||
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Revision as of 18:30, 24 May 2020
The vertex distance is the distance between the surface of your eye and the center back of your lens. As the lens moves further from the eye, it needs to be stronger to have the same effect. This is particularly important to know about when switching between contacts and eye glasses, and for very high myopes.