Bottom line: Beware of Zenni if you wear anything other than simple, single-vision glasses, which they probably are just fine for. If you need a specialty lens such as a progressive, know going in that, while they might make your lenses correctly, if they don't make them correctly, they will lie about it and refuse to either fix them or refund your full purchase price.
First, I bought a pair of "workspace" progressives from Zenni, and these were made perfectly. (I'm wearing them now.) Yay! The frames are a bit flimsy, but I don't throw my glasses against the wall, so I wasn't bothered by that. In fact, I liked the style of the frames so well I ordered a second pair of the same frames, using the same prescription, except this time standard progressives.
They made the standard progressives incorrectly. The distance part of the lens seemed correct, but the near and mid-range areas were just wrong. I couldn't get sharp vision through them at all, even after adjusting the nose pads to various positions and trying several different head angles.
I thought, no problem. This is a great company. I'll just call them and sort it out. They will remake the glasses, and all will be well. But that's not what happened.
I made the call. First, they walked through having me read aloud directly from my prescription and confirmed that those were the specs they used. Then they had me ship the glasses back to them with a prepaid label. So far, so good.
They received the glasses back on 08/24/2020. A week later, on 08/31/2020, they emailed me to say they had received the glasses back and would let me know the results of their inspection within 14 business days. On 09/12/2020, they emailed again saying they found the glasses to have been produced correctly and offering to (a) return them to me unaltered, (b) issue a 100% store credit, or (c) issue a 50% refund.
Knowing the glasses were not usable as standard progressives, I replied asking whether the lenses were some type other than standard progressive. Had
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