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→Insights about Transient Astigmatism and Cylinders
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If you stop using glasses, your eye's axial length adjusts, but the visual system doesn't care. It'll still think your vision is distorted in the same way as before and has a dependency on the lenses you used, while accommodating as needed to make it focused. | If you stop using glasses, your eye's axial length adjusts, but the visual system doesn't care. It'll still think your vision is distorted in the same way as before and has a dependency on the lenses you used, while accommodating as needed to make it focused. | ||
Whenever a cylinder is changed, the eye compensates for it, affecting all later focal planes. Equalizing seems to | Whenever a cylinder is changed, the eye compensates for it, affecting all later focal planes. Equalizing seems to just "repair" one eye while leaving the other one alone. Simple binocular spherical changes (and object distance) just "navigate" the focal planes. When undoing the changes, after you hit the cylinder change point, it removes the change point and applies the cylinder to the entire focal plane, and then you should fix it before continuing to reduce, although it's not strictly necessary. At the change point, everything before the change point was still distorted differently. The visual system just stops applying cylinder correction to the entire focal plane, making it seem like the cylinder was applied to the near planes and the opposite cylinder was applied to the far planes. | ||
It's interesting how our visual system can compensate for cylinder and spherical distortion. | It's interesting how our visual system can compensate for cylinder and spherical distortion. | ||