Some properties of the Jackson cross-cylinder in Figure 1. (a) The

2020–2021 BCSC Basic and Clinical Science Course™

Photonics, Free Full-Text

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William HARRIS, Professor (Full), BSc(Eng) MS PhD BOptom HonsBSc, University of Johannesburg, Johannesburg, uj, Department of Optometry

Jackson Cross Cylinder is a lens of fundamental importance in optometry with a key role in the refraction routine. And yet it appears not to be as

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