On the other hand, the "wavefron" IOLs can help reduce or omit aberrations of images that we sometimes see, especially in the dark when our pupils are larger. "Yellow'" or blue-blocking IOLs help block out the blue light that is believed to harm our macula and causes degenerative changes (all IOLs have ultraviolet tint anyway, to protect eyes against the sun's rays). "Toric" IOLs, like Toric contact lenses, are used in cases with a significant amount of astigmatism, so as to correct the astigmatism during the cataract surgery. The concept has been around for some time, but it is only current the designs that have shown better predictability and stability of resuts.
Tidak ada komentar:
Posting Komentar