Peripheral defocus as it relates to myopia progression: A mini-review

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Myopia is a global pandemic and a leading cause of visual impairment.
• Progressive myopia can lead to severe ocular complications.
• Hyperopic peripheral blur is increasingly recognized as a significant myopia risk factor.

Purpose of the Study:

• To review the primary theories behind myopia development.
• To explore parameters influencing peripheral blur, such as retinal area and depth.
• To discuss optical interventions for managing myopia progression.

Main Methods:

• Literature review of myopia research.
• Analysis of theories on myopia etiology.
• Examination of optical devices designed for peripheral defocus.

Main Results:

• Hyperopic peripheral blur is a critical factor in axial elongation and myopia progression.
• Parameters like blur area and depth significantly influence its effect.
• Various optical interventions aim to create peripheral myopic defocus.

Conclusions:

• Understanding hyperopic peripheral blur is crucial for developing myopia control strategies.
• Optical devices like multifocal lenses and orthokeratology show promise in managing myopia.
• Further research is needed to optimize the effectiveness of these interventions.