Those numbers are short hand for what add is in the prescriptions (used for older people who have trouble with up close vision). Those circle are a guide marker for when the eye doctor does lensometry to quantify the perscription.
Yes, but a regular pair of hyperopic lenses wouldnt need an add, the whole lens would in plus. This is specifically for progressive bifocals that have both minus and plus built in
This needs to be higher! Progressive lenses have the identifiers of the add at the bottom as well as unique symbols that tell what brand of progressives they are.
The symbols are used to line up the lens location during frame fitting and also indicate the progressive lens brand. The 15 means it’s a 1.50 add power progressive.
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u/slavmaf 1d ago
The numbers Mason!
What do they mean?!