Refractive error and monochromatic aberrations in Singaporean children

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Higher-order optical aberrations can impact visual quality.
• Understanding their prevalence and contributing factors in children is crucial for vision science.
• Previous research has not definitively linked aberrations to myopia development mechanisms.

Purpose of the Study:

• To measure higher-order optical aberrations in a cohort of Singaporean school children.
• To investigate the relationship between aberrations, refractive error, and ethnicity.
• To assess if optical aberrations are a significant factor in myopia development.

Main Methods:

• Ocular aberrations were measured using a Bausch and Lomb Zywave aberrometer in 273 children.
• Corneal topography was performed on 268 subjects using a Tomey TMS 2 system.
• Spherical aberration, coma, and other aberrations were analyzed in relation to refractive error and race.

Main Results:

• Low myopia subjects exhibited less positive spherical aberration than other refractive groups.
• Chinese subjects had significantly more aberrations (vertical coma, horizontal coma, spherical aberration) than Malay subjects.
• Anterior corneal aberration correlated with whole eye aberration, but residual aberration varied with refractive error and race.

Conclusions:

• Higher-order optical aberrations show ethnic and refractive error-dependent variations in children.
• The findings do not support aberration-driven form-deprivation as a primary mechanism for myopia development.
• Further research into the complex interplay of ocular components and refractive error is warranted.