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Off-axis imagery through two multi-segment lenses for myopia treatment.

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Modeling revealed significant optical aberrations in multi-segment spectacle lenses designed for myopia control. These lenses showed high peripheral corrections and astigmatism, impacting image quality, especially with oblique light incidence.

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Area of Science:

  • Ophthalmic optics
  • Myopia control research

Background:

  • Multi-segment spectacle lenses are designed to manage myopia progression.
  • Understanding their optical performance is crucial for effective myopia management.

Purpose of the Study:

  • To investigate the imaging characteristics of two novel multi-segment spectacle lenses for myopia progression.
  • To evaluate optical power distribution and image quality across the lens.

Main Methods:

  • Optical modeling was employed to simulate lens performance.
  • Image quality was assessed using spot diagrams and point-spread functions.
  • Peripheral and foveal vision optics were analyzed, considering eye rotation and lens segments.

Main Results:

  • Lenses exhibited high optical corrections, especially in the periphery.
  • Significant astigmatism and pupil-dependent power variations were observed.
  • Oblique light incidence exacerbated aberrations compared to normal incidence.

Conclusions:

  • The modeled multi-segment lenses present considerable optical challenges.
  • High peripheral power and aberrations may affect visual performance in myopia control.
  • Further investigation into lens design optimization is warranted.