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

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.