Iris 0.5 - 3.0mm
1.5x diopter with -4.5 to +4.5 correction
Engraved with its individual serial number
5 external push-fit rubber rings which attach to the knurled ring in: red, yellow, green, blue and black
Designed to provide an illusory optical effect which ensures perfect eye alignment
An extremely simple and inexpensive idea that gives exceptional improvement
Silver/blue
0
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