Evaluating retinal image quality for myopia control lenses in a synthetic accommodative wavefront model

Area of Science:

• Ophthalmology
• Optometry
• Optical Engineering

Background:

• Myopia control contact lenses (CLs) are increasingly used, but their impact on retinal image quality (RIQ) requires further investigation.
• Understanding how CL designs affect visual performance across different target vergences (TV) is crucial for optimizing patient outcomes.

Purpose of the Study:

• To evaluate the effects of dual-focus (DF) and extended depth of focus (EDOF) myopia control CLs on retinal image quality (RIQ).
• To assess the impact of these CLs on accommodative response (AR) using an accommodative wavefront model.

Main Methods:

• Generated 300 synthetic eyes using an accommodative wavefront model to simulate accommodation.
• Computationally combined wavefronts with DF (MiSight) and EDOF (Mylo) CL designs.
• Calculated RIQ and predicted accommodative response (AR) for naked eyes and eyes with CLs at various target vergences (TV).

Main Results:

• Both DF and EDOF CLs significantly reduced mean RIQ in relaxed and accommodated states compared to naked eyes.
• At -2.5D TV, both CLs induced a secondary peak in RIQ; EDOF showed a peak closer to the maximum.
• Theoretical AR was reduced by 0.27D with DF CLs and 0.75D with EDOF CLs.

Conclusions:

• Myopia control CLs, including DF and EDOF designs, impose significant limitations on RIQ and theoretical AR.
• The findings align with previous subjective optical performance studies.
• The validated wavefront model serves as a useful tool for testing CL optical performance.