These are poor quality lenses with poor customer service. You get what you pay for, and I would not recommend using Warby Parker.
I ordered high index lenses because I cannot use polycarbonate lenses. My glasses arrived and I noticed that my eyes hurt when I wore them. I give it a few days to adjust, but when my eyes continued to hurt, I started to suspect that they were polycarbonate, which have made my eyes hurt in the past.
I emailed Warby Parker to confirm that they sent the high index lenses, as I ordered. I thought they had perhaps mistakenly sent the wrong lenses. Nope. It turns out they intentionally sent me different lenses than I'd ordered without telling me. I get an email back telling me that they filled my order with regular lenses because in their experience those lenses are better for my prescription. They did not consult me about this decision, or even inform me. So, naively thinking they had sent me what I ordered, I used glasses that made my eyes hurt for days before realizing the problem. When I explained the problem, they recommended that I speak to one of their doctors or go into their stores, but didn't explain why they would change my order without consulting me. I've already wasted enough time with this company, I do not intend to spend any more time in hopes that they will fix the problem they created, and I wouldn't recommend this company to anyone.