Sometime after 40, the human eye loses much of its ability to focus up close and far away at the same time. My rifle match scores are deteriorating because I can either see the front sight clearly without prescription lenses or the target clearly with my prescription lenses but I can no longer do both well enough to plant my bullets around the bull like I used to. Several competitors have suggested I get shooting glasses that are half-way between plain safety glasses and my distance prescription… or “half a diopter less” than that prescription.
After discussing this idea with two local eyeglass sellers, both told me it is against the law to do that … without first hiring them to re-examine my eyes and write a fresh prescription.
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