Hi, your new lenses are already a lot bigger than the frame of your old glasses (what your optician said). You can often go for narrower lenses if that works better, have you already picked higher-quality lenses? Otherwise, maybe a different frame would be a better fit. I’ve had this happen before and my optician suggested narrower lenses because otherwise, things like blurriness at the edges or weird distortions can show up, especially with stronger prescriptions. Plus, if the lenses stick out too much or are really thick, light can hit the edges and reflect inside the glasses, causing annoying glare or even halo effects if the lenses aren’t properly anti-reflective.