Originally Posted by
vbull
Can you explain this datum mark for the astigmatism bit please ? I've looked at my prescription and can see nothing about astigmatism.
If there's nothing on your prescription for "cyl" (cylinder) and "axis", you don't have astigmatism.
If you do have astig. your prescription will have something like cyl -2.75, axis 140 as well as the spherical value. The 140 is degrees from the datum. My last lenses had datum at 12 o'clock, these new ones it's at 9.
Walther CP-2 Match, FAS 604 & Tau 7 target pistols, Smith & Wesson 6" & 4" co2 pistol, Crosman 1377,
Baikal IZH 53 pistol, Gamo CFX Royal,177, Umarex SA-10 CO2 pistol.
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