Difference between revisions of Astigmatism measurement

Astigmatism measurement (view source)

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	5. Then measure distance at which last set of lines starts to blur and convert as well.		5. Then measure distance at which last set of lines starts to blur and convert as well.

	6. One of those numbers (the first one?) is your CYL value. In which case the SPH value would be the second number minus the first. You might want to search around for more instructions on using the fan, and confirm that this guide is correct. It might not be, it is based on memory.		6. One of those numbers (the first one?) is your CYL value. In which case the SPH value would be the second number minus the first. '''You might want to search around for more instructions on using the fan, and confirm that this guide is correct. It might not be, it is based on memory.'''