Frame cheap eyeglasses near me have been imperfect since their invention, and excellent craftsmen seek a compromise amidst imperfections.
How imperfect are the frame eyes? The unavoidable aberration, the principle of frame glasses is to place an optical lens in the correct position. So what is the correct position?
The optical center of the lens should coincide with the pupil as much as possible! Why? Because of aberration! For example, the most commonly used myopia discount eyeglasses online lenses are essentially concave lenses, and some of the drawbacks of concave lenses are determined by physics. No amount of money spent on expensive brands can fundamentally eliminate aberration.
The optical center is the thinnest part in the center of this concave lens, and also the part with the smallest aberration. Why do we have to provide pupil distance and pupil height? Why is it recommended to adjust the distance between the eyes through a nose rest? Just to make the most of the optical center!
So what about beyond the optical center? Suggest cutting it off, which means calculating the amount of movement when selecting the cheapest eyeglasses online frame. But what if the frame calculated based on the displacement measurement doesn't look good? There's no way, it's about physics, so I've talked about it all. I'm looking for a compromise in imperfection.
So how much trouble does aberration add? The first thing is the thickness. We all know that myopia lenses have the thinnest edges machined according to the physical center of the frame.
But if someone does this, they are deliberately deceiving others. To reduce the aberration, they may get used to looking at things with slanted eyes. Did you notice that eye movement with framed glasses is not as flexible as with invisible lenses? Is the playing experience more obvious? Have you found the reason?
