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International Ophthalmology

, Volume 38, Issue 2, pp 577–583 | Cite as

Prevention of myopia by partial correction of hyperopia: a twins study

  • Antonio MedinaEmail author
Original Paper

Abstract

Purpose

To confirm the prediction of emmetropization feedback theory that myopia can be prevented by correcting the hyperopia of a child at risk of becoming myopic.

Methods

We conducted such myopia prevention treatment with twins at risk. Their hyperopia was partially corrected by one half at age 7 and in subsequent years until age 16.

Results

Hyperopia progressively decreased in all eyes as expected. None of the twins developed myopia. The spherical equivalent refractions of the followed eyes were +1 and +1.25 D at age 16. Feedback theory accurately predicted these values.

Conclusions

The treatment of the twins with partial correction of their hyperopia was successful. Prevention of myopia with this technique is relatively simple and powerful. The use of this myopia prevention treatment has no adverse effects. This prevention treatment is indicated in children with a hyperopic reserve at risk of developing myopia.

Keywords

Emmetropia Emmetropization Myopia Hyperopia Myopia prevention Feedback 

Notes

Acknowledgements

Special thanks to the dedicated mathematical assistance of Francisco Gaya. Funding was provided by Multivision Research.

Compliance with ethical standards

Conflict of interest

The authors have no proprietary or financial conflicts of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study. Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.

References

  1. 1.
    Sorsby A, Benjamin B, Davey JB et al (1961) Emmetropia and its aberrations. MRC special report series no. 293. Her Majesty’s Stationery Office, LondonGoogle Scholar
  2. 2.
    Zadnik K (1997) Myopia development in childhood. Optom Vis Sci 74:603–608CrossRefPubMedGoogle Scholar
  3. 3.
    Slataper FJ (1950) Age norms of refraction and vision. Arch Ophthalmol 43:466–481CrossRefGoogle Scholar
  4. 4.
    Medina A (1987) A model for emmetropization: predicting the progression of ametropia. Ophthalmologica 194:133–139CrossRefPubMedGoogle Scholar
  5. 5.
    Medina A, Fariza E (1993) Emmetropization as a first-order feedback system. Vis Res 33(1):21–26CrossRefPubMedGoogle Scholar
  6. 6.
    Medina A (2015) The progression of corrected myopia. Graefes Arch Clin Exp Ophthalmol 253:1273–1277. doi: 10.1007/s00417-015-2991-5 CrossRefPubMedGoogle Scholar
  7. 7.
    Gwiazda J, Thorn F, Bauer J, Held R (1993) Emmetropization and the progression of manifest refraction in children followed from infancy to puberty. Clin Vis Sci 8:337–344Google Scholar
  8. 8.
    Kempf GA, Collins SD, Jarman BL (1928) Refractive errors in the eyes of children as determined by retinoscopic examination with a cycloplegic. United States, 182. Government Printing Office, WashingtonGoogle Scholar
  9. 9.
    Ingram RM, Arnold PE (1991) Emmetropisation, squint and reduced visual acuity after treatment. Br J Ophthalmol 75:414–416CrossRefPubMedPubMedCentralGoogle Scholar
  10. 10.
    Medina A (1987) A model for emmetropization: the effect of corrective lenses. Acta Ophthalmol 65:565–571CrossRefGoogle Scholar
  11. 11.
    Mutti DO (2007) Emmetropize or not to emmetropize? The question for hyperopic development. Optom Vis Sci 84(2):97–102CrossRefPubMedGoogle Scholar
  12. 12.
    Zadnik K et al (2015) Prediction of juvenile-onset myopia. JAMA Ophthalmol 133(6):683–689. doi: 10.1001/jamaophthalmol.2015.0471 CrossRefPubMedPubMedCentralGoogle Scholar
  13. 13.
    Greene PR, Medina A (2016) Refraction data survey: 2nd generation correlation of myopia. Int Ophthalmol 36(9):609–614. doi: 10.1007/s10792-016-0172-0 CrossRefPubMedGoogle Scholar
  14. 14.
    Vitale S, Sperduto RD, Ferris FL (2009) Increased prevalence of myopia in the United States between 1971–1972 and 1999–2004. Arch Ophthalmol 127:1632–1639CrossRefPubMedGoogle Scholar
  15. 15.
    Wong L, Coggon D, Cruddas M, Hwang CH (1993) Education, reading, and familial tendency as risk factors for myopia. J Epidemiol Community Health 47:50–53CrossRefPubMedPubMedCentralGoogle Scholar
  16. 16.
    Fernández-Montero A, Olmo-Jimenez JM, Olmo N, Bes-Rastrollo M, Moreno-Galarraga L, Moreno-Montañés J, Martínez-González MA (2015) The impact of computer use in myopia progression: a cohort study in Spain. Prev Med 71:67–71CrossRefPubMedGoogle Scholar
  17. 17.
    Rose KA, Morgan IG, Ip J, Kifley A, Huynh S, Smith W, Mitchell P (2008) Outdoor activity reduces the prevalence of myopia in children. Ophthalmology 115:1279–1285. doi: 10.1016/j.ophtha.2007.12.019 CrossRefPubMedGoogle Scholar
  18. 18.
    Bullimore MA, Jones LA, Moeschberger ML, Zadnik K, Payor RE (2002) A retrospective study of myopia progression in adult contact lens wearers. Invest Ophthalmol Vis Sci 43(7):2110–2113PubMedGoogle Scholar
  19. 19.
    Kałuzny BJ, Koszewska-Kołodziejczak A (2005) Changes of eye refraction, corneal power and lens power during growth in emmetropia, myopia and hyperopia. Klin Oczna 107:464–467PubMedGoogle Scholar
  20. 20.
    Greene PR, Brown OS, Medina AP, Graupner HB (1996) Emmetropia approach dynamics with diurnal dual-phase cycling. Vis Res 36(15):2249–2251CrossRefPubMedGoogle Scholar
  21. 21.
    Chia A et al (2012) Atropine for the treatment of childhood myopia: safety and efficacy of 0.5%, 0.1%, and 0.01% doses (atropine for the treatment of myopia 2). Ophthalmology 119(2):347–354CrossRefPubMedGoogle Scholar
  22. 22.
    Shih YF et al (2001) An intervention trial on efficacy of atropine and multi-focal glasses in controlling myopic progression. Acta Ophthalmol Scand 79(3):233–236CrossRefPubMedGoogle Scholar
  23. 23.
    Oakley KH, Young FA (1975) Bifocal control of myopia. Am J Optom Physiol Opt 52:738–764CrossRefGoogle Scholar
  24. 24.
    Phillips J (2005) Monovision slows juvenile myopia progression unilaterally. Br J Ophthalmol 89:1196–1200. doi: 10.1136/bjo.2004064212 CrossRefPubMedPubMedCentralGoogle Scholar
  25. 25.
    Medina A (2016) Detecting the effect of under-correcting myopia. Graefes Arch Clin Exp Ophthalmol 254:409–410. doi: 10.1007/s00417-015-3111-2 CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.Research Laboratory of ElectronicsMassachusetts Institute of TechnologyCambridgeUSA
  2. 2.Multivision ResearchMilpitasUSA

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