Difference between revisions of Transient astigmatism
No edit summary |
No edit summary |
||
| Line 5: | Line 5: | ||
If it's too noticeable, you can step up spherical, but if it's not that bad, it's also OK to leave it. | If it's too noticeable, you can step up spherical, but if it's not that bad, it's also OK to leave it. | ||
If you somehow created a very large amount of transient astigmatism, [https://endmyopia.org/plus-lens-therapy-read-this-before-trying/ such as this person who | If you somehow created a very large amount of transient astigmatism, [https://endmyopia.org/plus-lens-therapy-read-this-before-trying/ such as this person who had up to 4.25 D of myopic defocus], you might consider adding a small amount of cylinder correction, but only as a last resort. | ||
Revision as of 18:37, 20 September 2021
Transient astigmatism is an effect that occurs when you reduce spherical and is temporary, so you should stop reducing and wait for it to disappear plus a little bit extra time, and reduce less aggressively next time. It becomes more severe when you reduce too quickly.
Even though it's functionally the same as real astigmatism (although rapidly changing), do not get cylinder correction for it, to the maximum extent possible, since you're just transitioning between two spherical values. If you do, you would just put extra load on your visual cortex for no reason, slowing down your progress.
If it's too noticeable, you can step up spherical, but if it's not that bad, it's also OK to leave it.
If you somehow created a very large amount of transient astigmatism, such as this person who had up to 4.25 D of myopic defocus, you might consider adding a small amount of cylinder correction, but only as a last resort.