I received a Finnish Rx as follows. Can anyone enlighten me as to what the "= 1.00" in the Rx below represents? (Kauas is far, oikea and vasen are right and left respectively so this is the Rx for far vision.
Kauas oikea: st + 4.25 cyl +.5 ax 90 = 1.00
Kauas vasen: st +4.00 cyl +1.25 ax 85 = 1.00
Thanks in advance for the assistance!
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