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ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

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An astigmatism prescription is one that can contains

Plus powers
Minus powers
Plano power
All of the above

Explanation

Answer: D - An astigmatism prescription is one that can contain any power but must have two powers that are perpendicular to each other.

These are called the sphere power and the cylinder power.

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