Difference between revisions of Astigmatism measurement
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(quote from BadZen but it sounds right to me based on what I've read) |
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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.''' | ||
==See Also== | |||
* [[Astigmatism]] | |||
* [[Cylinder]] | |||
* [[Measurement]] | |||