Difference between revisions of Axial elongation
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'''Axial elongation''' is an increase in the [[axial length]] of the eyeball. In young, far-sighted people, this | '''Axial elongation''' is an increase in the [[axial length]] of the eyeball. In young, far-sighted people, this shifts them from hyperopia towards emmetropia. In adults, this results in a higher degree of myopia, which is exactly what we're trying to avoid! | ||
Axial elongation in a [[lens-induced myopia]] context is primarily caused by [[hyperopic defocus]], typically [[close-up]] activity while wearing glasses that are too powerful for the distance in question. | Axial elongation in a [[lens-induced myopia]] context is primarily caused by [[hyperopic defocus]], typically [[close-up]] activity while wearing glasses that are too powerful for the distance in question. | ||
Revision as of 19:09, 19 September 2021
Axial elongation is an increase in the axial length of the eyeball. In young, far-sighted people, this shifts them from hyperopia towards emmetropia. In adults, this results in a higher degree of myopia, which is exactly what we're trying to avoid!
Axial elongation in a lens-induced myopia context is primarily caused by hyperopic defocus, typically close-up activity while wearing glasses that are too powerful for the distance in question.
It can also be induced by using a lot of accommodation for a large fraction of the time, excessive myopic defocus (don't reduce too much!), or form deprivation from things like diffusers.