Driving Performance Under Peripheral Defocus Induced by Ophthalmic Lenses for Myopia Control

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Myopia control spectacle lenses (MCSL) are designed to slow myopia progression.
• Peripheral defocus is a key mechanism in myopia development and control.
• The impact of MCSL on driving performance, a critical real-world task, requires investigation.

Purpose of the Study:

• To evaluate the effect of MCSL-induced peripheral defocus on driving performance.
• To assess potential risks to driving safety associated with MCSL wear.
• To determine if MCSL alter visual functions relevant to driving.

Main Methods:

• Twenty young adult drivers (18-25 years) participated.
• Peripheral visual acuity and contrast sensitivity were measured with and without MCSL.
• Driving performance was assessed using a simulator with secondary visual tasks, yielding an overall driving performance score (ODPS).

Main Results:

• MCSL significantly reduced peripheral visual acuity but did not affect peripheral contrast sensitivity.
• No significant changes in ODPS were observed when wearing MCSL.
• Central dynamic visual acuity and coherent dot motion detection correlated with ODPS, especially during demanding tasks.

Conclusions:

• Despite negative effects on peripheral vision, MCSL did not impair simulated driving performance.
• MCSL appear to be a safe option for myopia control concerning driving safety.
• Long-term effects on real-world driving require further investigation.