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Strong minus glasses significantly compress objects in your field of view such that they appear smaller. The closer the lenses are to your eyeballs, the less compression happens. Try it: move your minus glasses away from and back towards your eyeballs, and the view compression effect will be apparent. | Strong minus glasses significantly compress objects in your field of view such that they appear smaller. The closer the lenses are to your eyeballs, the less compression happens. Try it: move your minus glasses away from and back towards your eyeballs, and the view compression effect will be apparent. | ||
When the lenses sit on your eyeballs, view compression is absent. This is the case when you wear contact lenses. For glasses you can get some of this benefit by choosing | When the lenses sit on your eyeballs, view compression is absent. This is the case when you wear contact lenses. For glasses you can get some of this benefit by choosing a frame with really small diameter lenses, and adjusting the nose pads and ear hooks to position the lenses closer to your eyeballs than you would be able to with larger diameter frames: these won't fit between your eyebrow ridge and cheek bones. The practical limit on how deep you can place small-diameter lenses is reached when your eye lashes brush against the lenses. | ||
As a severe myope, you probably learned that pushing your glasses up your nose a bit can bring distant objects into better focus. This is because moving a minus lens closer to your eyeball increases its effective strength. Read the page on [[vertex distance]] to learn the details. For high-strength minus lenses, this results in a significant vertex distance correction that you must take into account when doing the End Myopia program. The vertex distance can change markedly depending on the design and adjustment of your frames. | As a severe myope, you probably learned that pushing your glasses up your nose a bit can bring distant objects into better focus. This is because moving a minus lens closer to your eyeball increases its effective strength. Read the page on [[vertex distance]] to learn the details. For high-strength minus lenses, this results in a significant vertex distance correction that you must take into account when doing the End Myopia program. The vertex distance can change markedly depending on the design and adjustment of your frames. | ||