Lens-induced myopia

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Lens-induced myopia is a result of hyperopic defocus, typically when someone wears distance vision glasses for close-up use.

It has been show in in studies that hyperopic defocus causes myopia.

Proteomic analysis of chick retina during early recovery from lens‑induced myopia - Yun Yun Zhou et al. - May 3, 2018 https://www.spandidos-publications.com/mmr/18/1/59?text=fulltext

It has been shown in studies that myopic defocus is protective against myopia progression.

Long -term effects of optical defocus on eye growth and refractogenesis Elena Tarutta et al. Pomeranian J Life Sci 2016;62(1):25-30 https://www.pum.edu.pl/__data/assets/pdf_file/0007/112849/PomeranianJLifeSci_62-01_025-030.pdf

A core tenant of EM is that doing near work in lenses designed for distance work causes myopia progression. Even if hyperopic blur is not induced by the lenses, the accommodation system is being constantly stressed and this encourages eye axial lengthening. This is supported by the fact that both bifocals and multifocals, which allow the eye to use less accommodation to do near work, are protective against myopia progression [1][2][3][4][5]

Near Work Induced Myopia

It is arguable if near work induced myopia is the same mechanism as lens induced myopia. Both are cases where you are doing work closer than your corrected vision is designed to do, but obviously near work induced myopia can happen before the first pair of glasses, and the term is more heavily associated with Pseudomyopia.

References

  1. Gw, Fulk; La, Cyert (1996 Dec). "Can Bifocals Slow Myopia Progression?". Journal of the American Optometric Association. 67(12): 749–754. PMID 9286316 – via PubMed. Check date values in: |date= (help)Page Module:Citation/CS1/styles.css has no content.
  2. Aller, Thomas; Grisham, David (2000-12). "(OR-103)MYOPIA PROGRESSION CONTROL USING BIFOCAL CONTACT LENSES: Poster # 92". Optometry and Vision Science. 77 (12): 187. ISSN 1538-9235. Check date values in: |date= (help)Page Module:Citation/CS1/styles.css has no content.
  3. Aller, Thomas (2002-12-13). "MYOPIA PROGRESSION WITH BIFOCAL SOFT CONTACT LENSES - A TWIN STUDY.: Poster # 142". Optometry and Vision Science. 79 (12): 179. ISSN 1538-9235.Page Module:Citation/CS1/styles.css has no content.
  4. Aller, Thomas; M, Liu; Cf, Wildsoet (2016 Apr). "Myopia Control With Bifocal Contact Lenses: A Randomized Clinical Trial". Optometry and Vision Science Supplement. 93(4): 344–52. PMID 26784710. Check date values in: |date= (help)Page Module:Citation/CS1/styles.css has no content.
  5. Goss, D A (1986 Feb). "Effect of Bifocal Lenses on the Rate of Childhood Myopia Progression". American journal of optometry and physiological optics. 63(2): 135–41. PMID 3953756. Check date values in: |date= (help)Page Module:Citation/CS1/styles.css has no content.