u/unski_ukuli

Just got a new pair of oakley sunglasses(Clifden), and I noticed that when I look at them from front against a bright light, I can see very clear birefringence patterns from stress. These are my first pair of polarized classes, so I don’t really have a point of comparison to know if this is something all glasses have. They are invisible when looking through the lenses from the right direction, so its not that they are annoying or distracting, but since this pair has prescription lenses, they weren’t exactly cheap and I’d rather not have paid almost 700 euros for defective glasses.