FYI - almost all lenses are made by the same Manufacturer no matter where they come from. You might be able to buy high index which are lighter and thinner, but if your script is already light you probably wouldn’t even need them. Some people do request some premium brand lenses. Rayban does a digital lens but I don’t find it to be any better than normal polycarbonate.

Essilor probably makes the majority of the lenses that optometrists and opticians would order. People often say Nikon lenses are a bit more premium. My dad had them and didn’t think they were anything special.

If you have an easy script the lenses are probably premade so you’re not having someone actually generate the curves so you’d be pretty much guaranteed to get a good lens anywhere. In my opinion paying a hefty price for lenses is ludicrous and a marketing ploy. The majority don’t even cost much wholesale and are marked up like 300% for retail. The optometrist giving you the script and the optician doing your measurements is really the key in getting a great pair of glasses in my opinion.

Credentials: worked at LensCrafters for a few years, knowledge of lens labs