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Related Experiment Video

Updated: Jun 14, 2025

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Choroidal Control Technology: New Horizons in Maculopathy and Presbyopia.

Abel Szeps1,2, Juan Manuel Suarez3, Rodrigo Torres4

  • 1Hospital Posadas, Buenos Aires, Argentina.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|September 7, 2024
PubMed
Summary

Reading glasses cause choroidal thickening in presbyopes, especially those with Age-Related Macular Degeneration (AMD). Choroidal control glasses effectively reduce this thickening during near work.

Keywords:
AMDAxial lengthDefocus choroidal control technologyPresbyopia

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Presbyopia correction with standard reading glasses can induce myopic defocus.
  • Myopic defocus is associated with choroidal thickening.
  • Age-Related Macular Degeneration (AMD) may influence ocular responses to refractive correction.

Purpose of the Study:

  • To investigate choroidal thickness changes in presbyopic patients during reading.
  • To compare the effects of conventional glasses versus choroidal control glasses.
  • To assess differences between patients with and without Age-Related Macular Degeneration (AMD).

Main Methods:

  • Pilot study involving 33 eyes of 24 presbyopic patients (60-80 years old).
  • Patients were divided into two age-matched groups: with and without AMD.
  • Axial length was measured using ocular biometry at baseline, after reading with conventional lenses, and after reading with peripheral hyperopic defocus glasses.

Main Results:

  • Presbyopes without AMD showed significant axial length shortening with conventional lenses, largely reversed by hyperopic defocus lenses (indicating choroidal thinning).
  • Patients with AMD exhibited greater axial length shortening with conventional lenses.
  • Both groups showed axial lengthening with defocus glasses, but the response was proportionally smaller in the AMD group.

Conclusions:

  • Reading with positive lenses induces myopic defocus and choroidal thickening in presbyopes, more pronounced in those with AMD.
  • Glasses incorporating Choroidal Control Technology effectively mitigate choroidal thickening during reading in presbyopes.
  • This suggests a potential benefit of specialized lenses for managing ocular changes associated with presbyopia and AMD.