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What is Measuring Lens Power with Focimeter about?
The document discusses different methods for measuring lens power, focusing on the focimeter. The focimeter uses optical principles to determine the power of lenses by measuring the distance the target must move from the standard lens. For spherical lenses, both sets of crossed lines will come into focus at the same power reading. For cylinders, the sphere power is found first, then the cylinder power is the difference between the first and second readings, and the axis is noted by the orientation of the li
- Author
- Eye Knowledge
- Language
- EN