First of all, you must have been deceived. Essilor lenses are not radiation-proof at all, but this does not matter, because no lens can protect against radiation. This is originally a gimmick used by optical shops to deceive people. That's it

The astigmatism of the lenses is not added by the optical shop, but by the lens manufacturers who have made many lenses to choose from. Generally, they range from 1200 degrees for myopia to 1200 degrees for farsightedness, and then there are different degrees for each degree. There are different degrees of astigmatism to choose from. The optical shop only needs to determine your degree and astigmatism through an optometry test, and then get the corresponding lenses. All they need to process is to cut the lenses into the corresponding shape according to the frame shape you choose (this It’s called trimming) and it’s just installed

If there are flowers in the middle of the lens, it depends on what they are and whether they can be wiped off. When cutting the lens, suction cups will be used to suck the lens. Sometimes there will be traces of the suction cup. This can be wiped off, but it is best to ask them to wipe it clean for you to avoid scratching the lens and they will not admit it; Yishi You will see an anti-counterfeiting trademark on your lenses when you breathe heavily. This will only appear when you breathe heavily or the lenses are very dirty. If it is not one of the two mentioned above, it may be scratched. You can ask them to replace the lens for you. If it is caught in the What's inside the lens is a fake product, so it needs to be replaced

In short, normal lenses must be absolutely pure and flawless. If there are any flaws, you can ask them to replace them for you